added install script and catkin ignore

README.md

 # Using OPENPOSE Wrapper
-# Compile openpose
+1. Install openpose and its dependencies then enable the package by running
+./install_openpose_and_enable_package.sh
 
-# If everything succeeds, run catkin build then:
+2. If everything succeeds, run catkin build then:
+````
 roscd openpose_rose/openpose
-rosrun openpose_ros openpose_ros_openpose_node --image_dir examples/media/
\ No newline at end of file
+rosrun openpose_ros openpose_ros_openpose_node --image_dir examples/media/
+````
\ No newline at end of file

install_openpose_and_enable_package.sh

+#!/bin/bash
+touch CATKIN_IGNORE
+echo "------------------------- Install Script -------------------------"
+echo "This will run the original install scripts from openpose."
+cd openpose
+./install_caffe_and_openpose.sh
+cd ../
+echo "------------------------- Enabling Package -------------------------"
+echo "Assuming everything in openpose built properly, we will now rename ignore_package.xml to package.xml so that catkin can build this package"
+rm CATKIN_IGNORE
\ No newline at end of file