Fix crash when opening a Realm file in the browser

Closes #1060.
Bump version to 0.87.1
First pass at Swift syntax

- still need to remove Object's typealias to RLMObject
- still need to support generic List properties
added Swift source files
disable build-fat RealmSwift for now
Implement generic List properties
Update Swift API for the Results/Array split
Add better tests for List<> and fix a few issues
Update for new migrations functionality
Update for Xcode 6.1
Refactor the List<> tests