Fixed GenFSM example code and typos.
Updated GenFSM example code
Wrap Mix.Shell.cmd with " instead of '

Single quotes can't be escaped in the shell so commands containing '
will not work. Instead wrap the command in double quotes that can be
escaped and escape " in the command.
Merge pull request #1478 from ericmj/mix-cmd-quotes

Wrap Mix.Shell.cmd with " instead of '
Merge pull request #1477 from jwarwick/genfsm_docs

Updated GenFSM
Split @protocol into @protocol and @for and add __impl__(:for)
Merge pull request #1481 from meh/protocol

Split @protocol into @protocol and @for and add __impl__(:for)
Do not show internal compiler output in stacktraces
Improve inspect for functions
Fix the build