Merge pull request #1 from gsandoval/master

Adds min/max validations.
Adding test/coverage/ to .gitignore
Adding test cases to min and max input validators
Version 0.7.3
Merge pull request #2 from gsandoval/master

Updates README.md
Updating to 0.7.4
Updating to 0.7.5
Adds ng-required attribute.
Merge branch 'master' of https://github.com/gsandoval/ng-currency
Merge remote-tracking branch 'upstream/master'