update readme

Author: Sunil Mallya

README.md

@@ -107,29 +107,39 @@ Click Test. At the bottom of the page you view Execution result and the log outp
 
 ### Lambda Deployment
 
-1. Connect to a 64-bit Amazon Linux instance via SSH.
+Connect to a 64-bit Amazon Linux instance via SSH.
 
+```
 ssh -i key.pem ec2-user@public-ip-address
+```
 
-2. Ensure basic build requirements are installed.
+Ensure basic build requirements are installed.
 
+```
 sudo yum install python27-devel python27-pip gcc
+```
 
-3. Install native dependencies required by Pillow.
+Install native dependencies required by Pillow.
 
+```
 sudo yum install libjpeg-devel zlib-devel
+```
 
-4. Create and activate a virtual environment.
+Create and activate a virtual environment.
 
+```
 virtualenv ~/lambda-apigateway-twilio-tutorial
 
 source ~/lambda-apigateway-twilio-tutorial/bin/activate
+```
 
-5. Install libraries in the virtual environment.
+Install libraries in the virtual environment.
 
+```
 pip install Pillow
 
 pip install boto3
 
 pip install twilio 
+```