Add opt dir instructions 

Add missing instructions that will affect the shell config.
Merge pull request #36 from kevinSuttle/master

Add missing opt dir commands
Typo
Dat MIT
Merge pull request #44 from jroes/patch-1

Typo
Update README.md including module documentation

The README.md has more detailed instructions on how to include modules from Github by editing your Puppetfile and site.pp files.
Updates rails docs for consistency
Merge pull request #54 from adamyonk/patch-1

Updates rails docs for consistency
Merge pull request #53 from kyleprager/master

More detailed documentation on how to include modules.
Merge pull request #45 from jroes/patch-2

Dat MIT