Merge pull request #57 from vhbsouza/master

Some problems solved in Ansi C and Ruby
Implement selection sort in JavaScript.
Somewhere here the git history has been mangled, clean up some issues until I go through and start adding tests for them all.
Start adding an overview for #34
Adding more overview, moving getElementsByClassName to correct folder.
Stack problem solved in C++11
added overflow test for Node.js solution to Stack-Machine; currently fails
Stack-Machine problem solved in C++11
Merge pull request #62 from tclamb/js-stack-machine

added overflow test for Node.js solution to Stack-Machine, currently fails
Merge pull request #61 from tclamb/c++11-stack-machine

Stack-Machine problem solved in C++11
Merge pull request #60 from tclamb/c++11-stack

Stack problem solved in C++11