Rename dimensions option to xhrContext since it holds more than just dimensions
Fixed documentation o  where xhrContext is used
Merge pull request #5 from yahoo/xhrContext

Rename dimensions option to xhrContext since it holds more than just dimensions
0.2.0
Fix dehydration of xhrContext
0.2.1
Fixed links syntax
Merge pull request #6 from robink/patch-1

Fixed links syntax