Update readme on compute sendgrid

Author: Shun Fan

compute/sendgrid/README.md

@@ -11,15 +11,14 @@ For more information about SendGrid, see their
 
 [sample-docs]: https://cloud.google.com/compute/docs/tutorials/sending-mail/using-sendgrid
 
-## Setup
+## Running on Compute Engine 
 
-Before you can run or deploy the sample, you will need to do the following:
+To run the sample, you will need to do the following:
 
 1. [Create a SendGrid Account](http://sendgrid.com/partner/google). As of
    September 2015, Google users start with 25,000 free emails per month.
 1. Create a compute instance on the Google Cloud Platform Developer's Console
-1. SSH into that instance. If SSHing from the Developer's Console, switch to user managed
-   if necessary.
+1. SSH into the instance you created
 1. Update packages and install required packages
     sudo apt-get update && sudo apt-get install git-core openjdk-8-jdk maven
 1. Clone the repo
@@ -32,6 +31,6 @@ Before you can run or deploy the sample, you will need to do the following:
     chmod +x compute-sendgrid-1.0-SNAPSHOT-jar-with-dependencies.jar
 1. Make sure that openjdk 8 is the selected java version
     sudo update-alternatives --config java
-1. Execute the jar file and send an email
+1. Execute the jar file and send an email (make sure you are in the target folder)
     java -jar compute-sendgrid-1.0-SNAPSHOT-jar-with-dependencies.jar