Merge pull request #32 from sachinsudheendra/master

Adding a copy of my blog post on using #gocd with custom certificates
Moving GeekNight Chennai to past events.
Adding a deleted event to past events.
Moved 29th May's Product Demo to past events.
Merge pull request #34 from mdaliejaz/updateEvents

Updated the Events page.
Fix broken link to setting up your dev environment.
Merge pull request #35 from sahilm/master

Fix broken link to setting up your dev environment.
Changed link of developer documentation to point to gitbook.
Merge pull request #36 from mdaliejaz/doc_link_update

Changed link of developer documentation to point to gitbook.
Word corrections
Shift 'Fork me on GitHub' button from left to right side
Merge pull request #38 from ermauliks/master

Shift 'Fork me on GitHub' button from left to right side
updated to reflect new Dockerfile setup
Merge pull request #39 from kmugrage/master

updated to reflect new Dockerfile setup
Adding Powershell Task plugin to the list
Merge pull request #41 from manojlds/patch-1

Adding Powershell Task plugin to the list