Update README.md

Summary:
Just a few tweaks, less verbose.

Also -- removed the "manual" installation. I don't think hardly anyone uses this. Plus, I don't think a simple drag + drop would work because of `OCMock`.
Closes #313

Differential Revision: D4313111

Pulled By: rnystrom

fbshipit-source-id: 4796d94e9f4c853220780074807e902a7390c037

README.md

@@ -37,7 +37,8 @@ A data-driven `UICollectionView` framework for building fast and flexible lists.
 🚀 | Extendable API
 🐦 | Written in Objective-C with full Swift interop support
 
-`IGListKit` is built and maintained with ❤️ by [Instagram engineering](https://engineering.instagram.com/), using the open source version for the Instagram app.
+`IGListKit` is built and maintained with ❤️ by [Instagram engineering](https://engineering.instagram.com/). 
+We use the open source version `master` branch in the Instagram app.
 
 ## Requirements
 
@@ -50,28 +51,25 @@ A data-driven `UICollectionView` framework for building fast and flexible lists.
 
 ### CocoaPods
 
-The preferred installation method for `IGListKit` is with [CocoaPods](https://cocoapods.org). Simply add the following to your `Podfile`:
+The preferred installation method for `IGListKit` is with [CocoaPods](https://cocoapods.org). 
+Add the following to your `Podfile`:
 
 ```ruby
 # Latest release of IGListKit
-pod 'IGListKit'
+pod 'IGListKit', '~> 2.0.0'
 
 # Use the master branch (we use this at Instagram)
 pod 'IGListKit', :git => 'https://github.com/Instagram/IGListKit.git', :branch => 'master'
 ```
 
 ### Carthage
 
-To integrate `IGListKit` into your Xcode project using [Carthage](https://github.com/Carthage/Carthage), specify it in your `Cartfile`:
+If using [Carthage](https://github.com/Carthage/Carthage), add the following to your `Cartfile`:
 
 ```ogdl
 github "Instagram/IGListKit" ~> 2.0.0
 ```
 
-### Manually
-
-You can also manually install the framework by dragging and dropping the `IGListKit.xcodeproj` into your project or workspace.
-
 ## Getting Started
 
 See the [Getting Started guide here](https://instagram.github.io/IGListKit/getting-started.html).
@@ -82,10 +80,10 @@ You can find [the docs here](https://instagram.github.io/IGListKit). Documentati
 
 ## Contributing
 
-Please see the [CONTRIBUTING](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md) file for how to help out. At Instagram we sync the open source version of `IGListKit` almost daily, so we're always testing the latest changes. But that requires all changes be thoroughly tested follow our style guide.
+Please see the [CONTRIBUTING](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md) file for how to help out. At Instagram we sync the open source version of `IGListKit` daily, so we're always testing the latest changes. But that requires all changes be thoroughly tested follow our style guide.
 
 ## License
 
 `IGListKit` is BSD-licensed. We also provide an additional patent grant.
 
-The files in the /Example directory are licensed under a separate license as specified in each file; documentation is licensed [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/).
+The files in the `/Examples/` directory are licensed under a separate license as specified in each file. Documentation is licensed [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/).