New formula: fb-adb

fb-adb is a tool for interacting with Android systems. It does much of what adb does, but with better remote shell support and, hopefully, fewer bugs.

I had submitted a pull request #31555. Because fb-adb didn't have any stable releases, It has been closed.

I had submitted this PR on homebrew-headonly.
https://github.com/Homebrew/homebrew-headonly/pull/58

Now fb-adb has a first tagged version, fb-adb 1.2.0. So I just made another pull request for this version of fb-adb.
https://github.com/facebook/fb-adb/issues/4
`fb-adb` requires `platform-tools` of android sdk. If I excute `fb-adb devices` without platform-tools, it fails.
````
It appears you do not have 'Android SDK Platform-tools' installed.
Use the 'android' tool to install them: 
    android update sdk --no-ui --filter 'platform-tools'
````
If someone install `android-sdk`, he or she should excute `android` to install platform tools and other stuffs.
````
==> Caveats
Now run the 'android' tool to install the actual SDK stuff.

The Android-SDK location for IDEs such as Eclipse, IntelliJ etc is:
  /usr/local/Cellar/android-sdk/24.0.1

You will have to install the platform-tools and docs EVERY time this formula
updates. If you want to try and fix this then see the comment in this formula.

You may need to add the following to your .bashrc:
  export ANDROID_HOME=/usr/local/opt/android-sdk

Bash completion has been installed to:
  /usr/local/etc/bash_completion.d
````