Merge pull request fffaraz#159 from hanjianwei/add-docopt

Add docopt.cpp

Author: fffaraz

README.md

@@ -140,6 +140,7 @@ A curated list of awesome C/C++ frameworks, libraries, resources, and shiny thin
 *Console/Terminal User Interface, Command Line Interface*
 
  * [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]
  * [Ncurses](http://invisible-island.net/ncurses/) - A terminal user interfaces. [MIT]
  * [termbox](https://github.com/nsf/termbox) - A C library for writing text-based user interfaces. [BSD]