Changing the license to use the Apache 2.0 license and updating headers.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS02]$/onebusawaywp7/OneBusAway;C103561
Quick fix - use HttpWebRequest.Create instead of WebRequest.Create.

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS02]$/onebusawaywp7/OneBusAway;C103562
Merge branch 'master' of https://github.com/OneBusAway/onebusaway-windows-phone