Update the README with more helpful info.

Author: isaacs

README.md

@@ -4,17 +4,26 @@ This is just enough info to get you up and running.
 
 More info available via `man npm`.
 
+## IMPORTANT
+
+You need node v0.2.0 or higher to run this program.
+
+You shouldn't use sudo with it.
+
 ## Simple Install
 
 To install npm, do this:
 
     curl http://npmjs.org/install.sh | sh
 
 If it dies with a "Permission Denied" or EACCESS error, then that probably
-means that you are running node in a shared root-owned location.  In that
-case, you'll have to use sudo.
+means that you are running node in a shared root-owned location.  You've
+got options.
 
-    curl http://npmjs.org/install.sh | sudo sh
+Using sudo with npm is Very Not Recommended.  Either chown the folder that
+is your node install prefix, or set up a `.npmrc` file pointing `root`,
+`binroot`, and `manroot` to folders that you own.  (The .npmrc is just an
+ini-formatted file, so you can use any editor to do this.)
 
 ## More Fancy Installing
 
@@ -35,7 +44,9 @@ on it, you can do this:
 
 If you check out the Makefile, you'll see that these are just running npm commands
 at the cli.js script directly.  You can also use npm without ever installing
-it by using `./cli.js` instead of "npm".
+it by using `node cli.js` instead of "npm".  Set up an alias if you want, that's
+fine.  (You'll still need read permission to the root/binroot/manroot folders,
+but at this point, you probably grok all that anyway.)
 
 ## Uninstalling
 
@@ -47,6 +58,14 @@ Or, if that fails,
 
 		make uninstall
 
+## Install Problems
+
+There's was an issue prior to npm version 0.2.0 where packages whose names contained
+hyphen characters would be odd.
+
+If you've installed any packages with `-` in the name prior to 0.2.0, then you ought
+to remove and reinstall them.
+
 ## More Docs
 
 Check out the [docs](http://github.com/isaacs/npm/blob/master/doc/).