Generalising GaApiRequest function for use with other types of GA API requests other than just core reporting API
Script to scrape the Google Analytics Dimensions and Metrics reference guide pages for details about available dimensions and metrics including descriptions.
Adding comments and code clean up
Code clean up and simplifications
More comments
Allow query argument to be optional
Try out the meta data API
Put into a function to prevent this file being executed at load
Pass the key and secret to the new_oauth function if they are provided as arguments
Create GaAuth function
Add GaSplitDateRange function
Fix split date range function
Experiment with Meta Data API
Improve reliably of checking for sampled reports
Add httr oauth cache file to the list of files that git should ignore
Merge branch 'master' of https://github.com/jdeboer/ganalytics into dev

Conflicts:
	R/GaApiRequest.R
	R/GetGa.R
Refactor API request function to allow for the case of no query parameter.
Migrate to Metta data API and use httr for OAuth authentication
Metta data API request and refactor OAuth handler
Upgrade to using the Metadata API