Updated gitignore and readme. Moved drupalgap.settings to default.index.html so users will have it stay safe in index.html. Added a DrupalGap/modules folder and adjusted drupalgap_onload to dynamically load core and custom modules defined by drupalgap.modules in index.html. Migrated the API, Services, and Views Datasource implementations out of drupalgap.js and into their own modules.