Readme version and URL update

[ci skip]

Merging develop to master for v0.13.0 release

Merge pull request revel#903 from revel/develop

v0.12 Release

Increasing Travis CI Go version to 1.3

Merge pull request revel#809 from revel/patch/fixed_params

Static module: get prefix from fixed params explicitly

Merge pull request revel#777 from revel/patch-11.1

Patch 11.1

Merges develop into master for v0.11

Fixes typo and more acknowledgements

Release v0.9.1

Update upgrade notes in README.md