Update deps
Adding more urls
Change boot watch to boot development

Remove JVM_OPTS from getting started. Will add to docs.
Making things more clear

Add JVM_OPTS from getting started.
Reordering sections.
Remove github section

- Change community section to community/contribute. Added links to other
  projects (javelin, castra, boot, hoplon.io and hoplon-demos)
- Removed link to hoplon group.