Change some methods to private
Add gemspec files automatically
Mixed changes

Move gem into module. Add exceptions, and partial documentation.
Fix test
Update test to match new code
Add error handling to readme
Remove TODO from readme
Change gsub to gsub!
Return hash value as integer when possible
Add documentation
Update gem to version 1.0.0
Merge pull request #5 from pyrohail/dev

Update gem to version 1.0.0