Set topdir to location of spec file
Update to graylog2-server 0.20.6
Remove name from setup, no need to specify
Add BUILD, RPMS, and SRPMS directories

These directories are required for building RPMS
All contents will be untracked (besides .gitignore files)
Ignore .tgz files in SOURCES
Remove rendundant reference to graylog2-server.spec

Was getting "file listed twice" warning here
Ignore the generated BUILDROOT folder
Convert tabs to spaces
Update changelog for version 0.20.6
Use upstart to manage graylog2-server instead of init
Correct description of graylog2-server