Now user can specify default param for optional field
Add extra test for default param
Use ruby old hash style
Add the record about the default optional param to CHANGELOG
Fix: #394 - Path version no longer overwrites a  parameter.
Merge branch 'master' of github.com:oivoodoo/grape into oivoodoo-master
Documented optional params default value.
Use 1.9-style symbol keys in README
Merge pull request #401 from reprah/readme-hash-syntax

Use 1.9-style symbol keys in README
add support for versioning using the 'Accept-Version' header
add documentation for :accept_version_header versioning strategy
Merge pull request #403 from politician/feature/support-accept-version-header

add support for versioning using the 'Accept-Version' header
Update README.md

update grape-entity URLs
Merge pull request #405 from ngpestelos/patch-1

Update README.md
Update CHANGELOG.md
Fix #407: specifying 'default_format' will also set the default POST/PUT data parser to the given format.
add pry-debugger
present with multiple entities using optional symbol
update README and CHANGELOG for present with multiple entities
ruby 1.8 compatible