Fixing missing quotes
Merge pull request #2 from bswinnerton/master

Fixing missing quote
Fixing missing quote in readme
Merge pull request #3 from bswinnerton/master

Fix missing quote
Fixing RVM version
Merge pull request #4 from bswinnerton/master

Fixing RVM version
Update install_instructions.md

removed $ for prompts... confused people.
Adding answers to all exercises
Merge branch 'master' into gh-pages