NSPredicate does not support float values in query strings; only double is. If a value can be casted to a float, and a class has a float property, we can help the user by casting for her but it might lead to loss of precision.
Adding unit tests and a short notice in the documentation about float and double values.
Merge branch 'master' of github.com:Realm/realm-cocoa into kg-predicates-floats
Merge branch 'master' into kg-predicates-floats

* master:
  removed RLMSortOrder
  Be paranoid and unlink build/bin before creating a new symlink
  Realm.podspec now lints for 0.81.0
  will keep docs at realm.io/docs/ios/** for this release.
  Updated spacing
  updated CHANGELOG
  - updated source to point to cocoapods zip - updated docs from ios->cocoa
  Added back SimpleExample's AppDelegate, which was mistakenly overwritten with the content of EncryptionExample in this commit: https://github.com/realm/realm-cocoa/commit/e4ac3011452b5f30b35d138694ae6d809cd6e514
  Updating Browser's version number
  Getting ready to version 0.81.0
  Add OSX support to the pod spec file

Conflicts:
	CHANGELOG.md
- clarified CHANGELOG entry
- removed “Note on float”
- moved nsnumber_can_be_float() check to nsnumber_is_like_float()
Merge branch 'master' into kg-predicates-floats

* master:
  - Realm-Xcode6 universal iOS framework now builds to Release-iphone to not conflict with OSX build - updated CHANGELOG
  mkdir -p Debug
  mkdir -p Release
  sh build.sh ios{-debug} now builds a universal framework when XCODE_VERSION=6

Conflicts:
	CHANGELOG.md
@bmunkholm comment updates
Merge pull request #643 from realm/kg-predicates-floats

Implicit casting to float value in predicates