readme + correct mathjax file

Author: CamDavidsonPilon

README.md

@@ -23,16 +23,13 @@ This book has an unusual development design. The content is open-sourced, meanin
 Authors submit content or revisions using the GitHub interface. After a major revision or addition, we collect all the content, compile it to a 
 PDF, and increment the version of *Bayesian Methods for Hackers*. 
 
-Similarly, our royalty system is different. Instead of a publisher-author-take-all system, we will experiment with a fractioned-royalty system. An author's
-annual royalty is proportional to the fraction of content he or she contributed to the project at the end of each year. Even if an author's content is removed in a later version of 
-the book, the author will still possess a non-zero fraction of the *total* contributions. Further details will be published soon.
-
 Finally, our reader-purchase system is different. Readers can choose how much to pay for the book, including $0.
 
 
 Contributions and Thanks
 -----
 
+
 Thanks to all our contributing authors, including (in chronological order):
 -  [Cameron Davidson-Pilon](http://www.camdp.com)
 -  Andrew Hand
@@ -44,3 +41,21 @@ statistics community for building an amazing architecture.
 
 One final thanks. This book was generated by IPython Notebook, a wonderful tool for developing in Python. We thank the IPython 
 community for developing the Notebook interface. All IPython notebook files are available for download on the GitHub repository. 
+
+
+
+### How to contribute
+
+####Installation and configuration
+
+-  In the styles/ directory are a number of files that are customized for the book. These are not only designed for the book, but they offer many improvements over the 
+default settings of matplotlib and the IPython notebook.
+
+-  Currently the formatting of the style is not set, so try to follow what has been used so far, but inconsistencies are fine. 
+
+####Commiting
+
+- all commits are welcome, even if they are minor. 
+
+####Contact
+Contact the main author, Cam Davidson-Pilon at [email protected] or [@cmrndp](https://twitter.com/cmrndp)

styles/initmathjax.js

@@ -0,0 +1,86 @@
+//----------------------------------------------------------------------------
+//  Copyright (C) 2008-2011  The IPython Development Team
+//
+//  Distributed under the terms of the BSD License.  The full license is in
+//  the file COPYING, distributed as part of this software.
+//----------------------------------------------------------------------------
+
+//============================================================================
+// MathJax initialization
+//============================================================================
+
+var IPython = (function (IPython) {
+
+    var init_mathjax = function () {
+        if (window.MathJax) { 
+            // MathJax loaded
+            MathJax.Hub.Config({
+                        TeX: {
+                           extensions: ["AMSmath.js"]
+                           },
+                tex2jax: {
+                    inlineMath: [ ['$','$'], ["\\(","\\)"] ],
+                    displayMath: [ ['$$','$$'], ["\\[","\\]"] ]
+                },
+                displayAlign: 'center', // Change this to 'center' to center equations.
+                "HTML-CSS": {
+                    styles: {'.MathJax_Display': {"margin": 4}}
+                }
+            });
+        } else if (window.mathjax_url != "") {
+            // Don't have MathJax, but should. Show dialog.
+            var dialog = $('<div></div>')
+                .append(
+                    $("<p></p>").addClass('dialog').html(
+                        "Math/LaTeX rendering will be disabled."
+                    )
+                ).append(
+                    $("<p></p>").addClass('dialog').html(
+                        "If you have administrative access to the notebook server and" +
+                        " a working internet connection, you can install a local copy" +
+                        " of MathJax for offline use with the following command on the server" +
+                        " at a Python or IPython prompt:"
+                    )
+                ).append(
+                    $("<pre></pre>").addClass('dialog').html(
+                        ">>> from IPython.external import mathjax; mathjax.install_mathjax()"
+                    )
+                ).append(
+                    $("<p></p>").addClass('dialog').html(
+                        "This will try to install MathJax into the IPython source directory."
+                    )
+                ).append(
+                    $("<p></p>").addClass('dialog').html(
+                        "If IPython is installed to a location that requires" +
+                        " administrative privileges to write, you will need to make this call as" +
+                        " an administrator, via 'sudo'."
+                    )
+                ).append(
+                    $("<p></p>").addClass('dialog').html(
+                        "When you start the notebook server, you can instruct it to disable MathJax support altogether:"
+                    )
+                ).append(
+                    $("<pre></pre>").addClass('dialog').html(
+                        "$ ipython notebook --no-mathjax"
+                    )
+                ).append(
+                    $("<p></p>").addClass('dialog').html(
+                        "which will prevent this dialog from appearing."
+                    )
+                ).dialog({
+                    title: "Failed to retrieve MathJax from '" + window.mathjax_url + "'",
+                    width: "70%",
+                    modal: true,
+                })
+        } else {
+            // No MathJax, but none expected. No dialog.
+        };
+    };
+
+
+    // Set module variables
+    IPython.init_mathjax = init_mathjax;
+
+    return IPython;
+
+}(IPython));