Add build instructions
Add build instructions

Change-Id: I0b03490fd0a29683a86a565d2128c4c87d7ed182

akilman/appd-hackathon-2016,pgroudas/gerrit-keep-approvals,GerritCodeReview/plugins_cookbook-plugin,akilman/appd-hackathon-2016,akilman/appd-hackathon-2016,GerritCodeReview/plugins_cookbook-plugin,GerritCodeReview/plugins_cookbook-plugin,pgroudas/gerrit-keep-approvals