Merge pull request fffaraz#372 from adishavit/master

Adds Argh! to CLI libraries.

Author: fffaraz

README.md

@@ -146,6 +146,7 @@ A curated list of awesome C/C++ frameworks, libraries, resources, and shiny thin
 ## CLI
 *Console/Terminal User Interface, Command Line Interface*
 
+ * [Argh!](https://github.com/adishavit/argh) - A minimalist, frustration-free, header-only argument handler. [BSD]
  * [Boost.Program_options](http://www.boost.org/doc/libs/1_57_0/doc/html/program_options.html) - A library to obtain program options via conventional methods such as command line and config file. [Boost]
  * [docopt.cpp](https://github.com/docopt/docopt.cpp) - A library to generate option parser from docstring. [MIT/Boost]
  * [gflags](https://gflags.github.io/gflags/) - Commandline flags module for C++. [BSD]