Update readme with detailed installation process

Author: subeshb1

README.md

@@ -9,20 +9,34 @@ A simple bash script to test JSON API from terminal in a structured and organize
 - [curl](https://curl.haxx.se/download.html)
 - [jq](https://stedolan.github.io/jq/download)
 
+In cloud 9 / CentOs / aws linux image
+
+```sh
+sudo yum install jq
+```
+
 ## Installing
 
+Pull the script
+
 ```sh
 curl -LJO https://raw.githubusercontent.com/subeshb1/api-test/master/api-test.sh
 ```
 
+Make the script executable
+
 ```sh
 chmod +x api-test.sh
 ```
 
+Move it to `/usr/local/bin` to make it executable from anywhere
+
 ```
-mv api-test.sh /usr/local/bin/api-test
+sudo mv api-test.sh /usr/local/bin/api-test
 ```
 
+Check if the installation is successful
+
 ```
 api-test --help
 ```
@@ -90,13 +104,19 @@ Example:
   },
   "url": "localhost:3000",
   "header": {
-    "Authorization": "Bearer  <ACCESS_TOKEN>"
+    "Authorization": "Bearer <ACCESS_TOKEN>"
   }
 }
 ```
 
 The test cases are present in the `testCases` object. The main url for the api is store in `url` string. If the test cases share common headers add them in root `header` key.
 
+To pull the `template.json`
+
+```
+curl -LJO https://raw.githubusercontent.com/subeshb1/api-test/master/template.json
+```
+
 ### Running test case
 
 ```