docs($resource): fix missing punctuation
chore(Rakefile): parallelize the build on Travis

now that the forking issue is solved we can run regular build there

https://github.com/travis-ci/travis-ci/issues/845
docs(guide): Fix typos in concepts/model,view.
feat(filter): Add comparison function to filter

Add optional comparator function argument to $filter('filter')(array,
expression, comparator) such that the comparator function is used to
compare the values and predicates.  When true, defaults to equality.
When missing defaults to substring matching.
chore(reakefile): auto install npm packages
fix(compiler): Allow startingTag method to handle text / comment nodes
fix(resource): Update RegExp to allow urlParams with out leading slash

Will allow reoucese to be loaded from a relative path
Example:
var R = $resource(':path');
R.get({ path : 'data.json' });

Example usage:
Load resources in applications not using webserver, ie local webapp in 
on a tablet.