add README.md skeleton for github
Merge pull request #2 from gordon/master

README.md skeleton
add and update web documentation
Merge pull request #3 from satta/master

Added documentation
explain contribution process in more detail
Merge pull request #4 from gordon/master

README.md: explain contribution process in more detail
add gthbssmbuild to dev tools
Merge pull request #5 from gordon/gthbssm

add gthbssmbuild to dev tools
change links to issue tracker and code browser
Merge pull request #6 from satta/master

Update issue tracker and code browser links.