Update iso-3166-country-codes-angular.js

uppercase country code in isCountryCode, and getCountryName
Merge branch 'release-1.0.3' into develop
Updates README
Merge pull request #7 from ItsLeeOwen/develop

Adds support to check for country codes no matter the case
Formats pull request code so that jslint passes
Builds minified version
Bumps version to 1.0.4
Merge branch 'release-1.0.4'