Merge pull request #12 from devxoul/swift

Rewrite into Swift.
Overload equality operator for KeyBinding.
Fix framework search path
Fix embedded birnay and linked frameworks.
Use icon set for retina.
Merge pull request #13 from devxoul/retina

Use icon set for retina.
Fix binary path.
Add Daum dictionary.
Revert "Remove `NSWindow+CamBecomeKeyWindow`"

This reverts commit a27a40c031eb941cb48dfef2b30f52a3a1abb34b.

Conflicts:
	Allkdic.xcodeproj/project.pbxproj
Merge pull request #14 from devxoul/feat/daum

Add Daum dictionary.
Fix an issue that popover doesn't render some child views' parent view.
Merge pull request #15 from devxoul/bug/background-transparent

Fix an issue that popover doesn't render some child views' parent view.
Track dictionay swap event.
Track Daum dictionary type.
Update website URL.
Use CocoaPods