Merge pull request #1 from jgv/dev

[v0.3]
update blurb for rubygems
add ability to convert from lat/lon pairs. organize files by type
break out classes by type
add conversion from city state to zip
bump version number
Fix require issue by using git to list files in gemspec
Merge pull request #2 from BlakeWilliams/master

Fix require issue
bump version
typo
big bugfix on lat/lon conversion
correct version
remove debugger dependency
support ruby 1.8.7
fix variable length lat/lon bug
bump version
only test mri
Zip codes are handled as integers

The readme shows "11211".to_region, but the method is defined for Integer#to_region
Merge pull request #3 from rthbound/master

Readme correction: zip should be integer for to_region
[v0.6.0] fix nasty bug for zips with leading zeros. get an area code from a string or integer