[CB-2788] added bash check-reqs script

bin/check_reqs

@@ -0,0 +1,34 @@
+#! /bin/bash
+#       Licensed to the Apache Software Foundation (ASF) under one
+#       or more contributor license agreements.  See the NOTICE file
+#       distributed with this work for additional information
+#       regarding copyright ownership.  The ASF licenses this file
+#       to you under the Apache License, Version 2.0 (the
+#       "License"); you may not use this file except in compliance
+#       with the License.  You may obtain a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#       Unless required by applicable law or agreed to in writing,
+#       software distributed under the License is distributed on an
+#       "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#       KIND, either express or implied.  See the License for the
+#       specific language governing permissions and limitations
+#       under the License.
+#
+ROOT="$( cd "$( dirname "$0" )/.." && pwd )"
+cmd=`android list target`
+if [[ $? != 0 ]]; then
+    echo "The command `android` failed. Make sure you have the latest Android SDK installed, and the `android` command (inside the tools/ folder) added to your path."
+    exit 2
+elif [[ ! $cmd =~ "android-17" ]]; then
+    echo "Please install Android target 17 (the Android 4.2 SDK). Make sure you have the latest Android tools installed as well. Run `android` from your command-line to install/update any missing SDKs or tools."
+    exit 2
+else
+    cmd="android update project -p $ROOT -t android-17 1> /dev/null 2>&1"
+    eval $cmd
+    if [[ $? != 0 ]]; then
+        echo "Error updating the Cordova library to work with your Android environment."
+        exit 2
+    fi
+fi