added bin for CLI support
Merge pull request #11 from jgallen23/feature/cli

added bin file for CLI support
Bump version for release
Added helper function to cache dependencies and manage the cache.
Tests for cacheDependency
Documentation update and bump version for release.
Fix typo
prints out a one line command to update dependencies
Merge pull request #12 from jgallen23/feature/cli-oneliner

prints out a one line command to update dependencies
Added bin/david.js to jshint grunt task. Renamed variable from reserved word "package" to "pkg". Fixed other misc jshint warnings.
Bump version for release