Update docs with tutorial, updated quickstart
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-helix
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-helix

Conflicts:
	src/site/markdown/Tutorial.md
	src/site/markdown/index.md
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-helix
Minor editst
Minor wording edit
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/incubator-helix

Conflicts:
	src/site/markdown/Concepts.md
Add short version section to quickstart to document use of quickstart.sh