extract installFbSimCtl

.travis.yml

   #- echo no | android create avd --name AVD -t android-25 --abi google_apis/armeabi-v7a
   #- android list avd
         # fbsimctl:
-  - brew tap facebook/fb && brew install fbsimctl
+  - source ./scripts/env/installFbSimCtl.sh
 
 script:
   - set -e

scripts/env/installFbSimCtl.sh

+#!/bin/bash -e
+
+brew tap facebook/fb
+brew install fbsimctl