Update how to contribute docs (#1553)

docs/_docs/development/how-to-develop.md

@@ -4,12 +4,12 @@ layout: docs
 permalink: /development/how-to-develop.html
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-As an open source project, contributions are always welcome. Before you start, please read our <a href = "https://github.com/TextureGroup/Texture/blob/master/CONTRIBUTING.md">Contribution Guidelines</a>. It's also a good idea to familiarize yourself with our <a href = "overview.html">Development documentations</a>.
+As an open source project, contributions are always welcome. Before you start, please read our [Contribution Guidelines](https://github.com/TextureGroup/Texture/blob/master/CONTRIBUTING.md). It's also a good idea to familiarize yourself with our [Development documentations](overview.html).
 
 Setting up your dev environment:
-- If you don't have CocoaPods installed on your machine yet, you should <a href = "https://guides.cocoapods.org/using/getting-started.html#getting-started">install it</a> now.
+- If you don't have CocoaPods installed on your machine yet, you should [install it](https://guides.cocoapods.org/using/getting-started.html#getting-started) now.
 - Clone the framework's source code to your machine: `git clone [email protected]:TextureGroup/Texture.git` or `git clone https://github.com/TextureGroup/Texture.git`.
 - Run `pod install` in the directory that you cloned to.
 - Open "AsyncDisplayKit.xcworkspace" file CocoaPods has just generated. The workspace includes all the source code, as well as our test suite.
-- To run the test suite, make sure you select the same <a href = "https://github.com/TextureGroup/Texture/blob/32a2ebf49b797b0ba2a74f2af44457a9aa7b1160/build.sh#L3">device configuration we are using for our CI</a>, which is an iPhone 7 running iOS 10.2. This is important as our snapshot tests only have snapshots captured on such device configuration.
+- Run `./build.sh all` locally and ensure all tests pass. Also make sure you're running the same Xcode version and Cocoapods version as the CI (currently Xcode 10.2.1 and Cocoapods 1.6). [xcversion](https://github.com/xcpretty/xcode-install) is a handy tool for keeping multiple versions of Xcode installed. You'll also need the correct [simulator device configuration](https://github.com/TextureGroup/Texture/blob/32a2ebf49b797b0ba2a74f2af44457a9aa7b1160/build.sh#L3) available.
 - To run one of our sample projects, run `pod install` in the sample's directory and open the generated workspace.