- Moved www/README.txt to master/docs/developer.
- Modified README.txt to README.rst and restructured the text.
Update setup.py.
Skip most tests that fail without buildbot_www.

The remaining tests that needlessly fail without buildbot_www are:
- buildbot.test.integration.test_master
- buildbot.test.unit.test_scripts_create_master.TestCreateMasterFunctions.test_createDB
- buildbot.test.unit.test_scripts_upgrade_master.TestUpgradeMasterFunctions.test_upgradeDatabase
Merge branch 'nine_readme' of git://github.com/ewongbb/buildbot into nine
restore a tiny README for www; the rest is already present in www.rst