Fixed using values with a default proc.
[readme] Add hashie_rails on Rails section

* References #769
* Fixes #685
* Add hashie_rails link
* Add rails 4.0+ specification

[ci skip]
Merge pull request #781 from pragmaticivan/hashie_rails

[readme] Add hashie_rails on Rails section
README: fix typo
Merge pull request #783 from emma-borhanian/readme-typo

README: fix typo
Fixing typo in Auth section
Merge pull request #796 from ppadron/patch-1

Fixing typo in Auth section
Address #778 - don't restrict options to Hash/Array types

 * I'm not sure what I was thinking originally, but this obviously
   breaks the use of custom validators.

 * Add a spec for #778 whilst on it.
Add fix to #778 to changelog
Merge pull request #799 from bwalex/fix_778

Address #778 - don't restrict options to Hash/Array types
README - update for AR without Rails (see #517)
Merge pull request #800 from bwalex/readme_ar

README - update for AR without Rails (see #517)
Use the new beta build env on Travis

builds start in secs, such speed, wow!
Merge pull request #805 from joshk/patch-1

Use the new beta build env on Travis
Added all_or_none parameter validator.
Fixed present to not overwrite the previously added contents of the response body whebn called more than once.
Update to README documentation for issue #798

Refers to the use of /api/ at the beginning of sample routes to match
the use of 'prefix :api' in sample code.
Remove .format suffixes from paths if you narrow your API to only one format.
#809: update docs & changelog
Merge pull request #809 from ajvondrak/master

Don't use `.format` suffix in paths if you only have one format