Update build instructions with new URLs.

Expand Android Studio steps.

Closes #4462

BUILDING.md

@@ -1,22 +1,22 @@
-Building TextSecure
+Building Signal
-=====================
+===============
 
 Basics
 ------
 
-TextSecure uses [Gradle](http://gradle.org) to build the project and to maintain
+Signal uses [Gradle](http://gradle.org) to build the project and to maintain
 dependencies.
 
-Building TextSecure
+Building Signal
--------------------
+---------------
 
-The following steps should help you (re)build TextSecure from the command line.
+The following steps should help you (re)build Signal from the command line.
 
-1. Checkout the source somewhere on your filesystem with 
+1. Checkout the Signal-Android project source with the command:
 
-        git clone https://github.com/WhisperSystems/TextSecure.git
+        git clone https://github.com/WhisperSystems/Signal-Android.git
 
-2. Make sure you have the [Android SDK](https://developer.android.com/sdk/index.html) installed somewhere on your system.
+2. Make sure you have the [Android SDK](https://developer.android.com/sdk/index.html) installed.
 3. Ensure that the following packages are installed from the Android SDK manager:
     * Android SDK Build Tools
     * SDK Platform
@@ -38,8 +38,8 @@ Source assets tend to be large binary blobs, which are best stored outside of gi
 Sample command for generating our audio placeholder image:
 
 ```bash
-pngs_from_svg.py ic_audio.svg /path/to/TextSecure/res/ 150 --color #000 --opacity 0.54 --suffix _light
+pngs_from_svg.py ic_audio.svg /path/to/Signal/res/ 150 --color #000 --opacity 0.54 --suffix _light
-pngs_from_svg.py ic_audio.svg /path/to/TextSecure/res/ 150 --color #fff --opacity 1.00 --suffix _light
+pngs_from_svg.py ic_audio.svg /path/to/Signal/res/ 150 --color #fff --opacity 1.00 --suffix _light
 ```
 
 Setting up a development environment
@@ -48,13 +48,14 @@ Setting up a development environment
 [Android Studio](https://developer.android.com/sdk/installing/studio.html) is the recommended development environment.
 
 1. Install Android Studio.
-2. Make sure the "Android Support Repository" is installed in the Android Studio SDK.
+2. Open Android Studio. On a new installation, the Quickstart panel will appear. If you have open projects, close them using "File > Close Project" to see the Quickstart panel.
-3. Make sure the latest "Android SDK build-tools" is installed in the Android Studio SDK.
+3. From the Quickstart panel, choose "Configure" then "SDK Manager".
-4. Create a new Android Studio project. from the Quickstart pannel (use File > Close Project to see it), choose "Checkout from Version Control" then "git".
+4. In the SDK Tools tab of the SDK Manager, make sure that the "Android Support Repository" is installed, and that the latest "Android SDK build-tools" are installed. Click "OK" to return to the Quickstart panel.
-5. Paste the URL for the TextSecure project when prompted (https://github.com/WhisperSystems/TextSecure.git).
+5. From the Quickstart panel, choose "Checkout from Version Control" then "git".
-6. Android studio should detect the presence of a project file and ask you whether to open it. Click "yes".
+6. Paste the URL for the Signal-Android project when prompted (https://github.com/WhisperSystems/Signal-Android.git).
-7. Default config options should be good enough.
+7. Android studio should detect the presence of a project file and ask you whether to open it. Click "yes".
-8. Project initialisation and build should proceed.
+9. Default config options should be good enough.
+9. Project initialisation and build should proceed.
 
 Contributing code
 -----------------
@@ -67,3 +68,4 @@ Mailing list
 Development discussion happens on the whispersystems mailing list.
 [To join](https://lists.riseup.net/www/info/whispersystems)
 Send emails to whispersystems@lists.riseup.net
+