Add created field to ProductSummary class
Include created in ProductIndex summary query
Add "indexTime" to toArray method
Convert indexTime to a number in geojson formats
Use safefloatval instead of floatval when parsing product summaries
Add CORS headers to feed and api responses
Remove CORS headers form cache.inc.php
Add CORS headers to gruntfile
Remove storage CORS headers
Prevent php execution in storage directory
Only allow GET requests for product storage, feeds, and api
Forbid query strings to summary/detail feeds, and product contents
Add far future expires to product contents
Merge pull request #51 from jmfee-usgs/add-created

Add created
Fixed gruntfile requirejs shim.
Fix variable name in getLastModified