Bumping version to 3.3.4
Bumping version to 3.3.4

zhangao0086/DKImagePickerController,North-American-Signs/DKImagePickerController,gorjuspixels/DKImagePickerController,metasmile/DKImagePickerController,gorjuspixels/DKImagePickerController,metasmile/DKImagePickerController,North-American-Signs/DKImagePickerController,zhangao0086/DKImagePickerController