Added Podspec file. Changed README to comply Swift3.0 checklist

PictureViewMaster.podspec

@@ -0,0 +1,32 @@
+
+Pod::Spec.new do |s|
+  s.name         = "PictureViewMaster"
+  s.version      = "2.0"
+  s.summary      = "Image projector for image views"
+  s.description  = <<-DESC
+                   Picture View Master lets you add UIImagesViews that can be present in a View Controller ( as if they were being projected ) and let the 
+                   user zoom, rotate, and move it.
+                   DESC
+
+  s.homepage     = "https://github.com/inaka/PictureViewMaster"
+  s.screenshots  = "https://raw.githubusercontent.com/inaka/PictureViewMaster/master/PictureImageView.gif"
+  s.license      = { :type => 'Apache License, Version 2.0', :text => <<-LICENSE
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+    LICENSE
+  }
+  s.author    = "Inaka"
+  s.social_media_url   = "http://twitter.com/inaka"
+  s.platform     = :ios, "9.3"
+  s.source       = { :git => "https://github.com/inaka/PictureViewMaster.git", :tag => s.version }
+  s.source_files  = "PictureViewMaster/**/*.swift"
+end

README.md

@@ -60,10 +60,10 @@ And that's it. PictureMasterView will take care of showing himself and dismissin
 
 ## Older Versions Support
 
-- As of its `2.0.0` release, this library works with **Swift 3.0**
+- As of its `2.0` release, this library works with **Swift 3.0**
 - If you look for older languages version support, you can check out:
-- `1.1.0` release for Swift 2.3 support.
-- `1.0.2` release for Swift 2.2 support.
+- `1.1` release for Swift 2.3 support.
+- `1.0` release for Swift 2.2 support.
 
 
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