Version to 2.8.1
Update-exec.sh latest to 2.8.0
README.txt polishing
Merge pull request #26 from hupponen/master

README.txt polishing
Great change
Merge pull request #27 from hupponen/master

Great change
Fixed README.txt
Updated manual and release notes.
Merge branch 'master' of https://github.com/chipster/chipster.git
Merge branch 'master' into release
Version back to 2.8.0
Build 2.8.0 again