Merge pull request #216 from sawilde/master

fix broken test asserts
Merge pull request #223 from sawilde/master

#218 auto generate release notes to be tagged with build version
Update release notes
Update README.md
add a sample solution that shows how to use opencover with nunit and reportgenerator.
#206 add user note to documentation
Merge branch 'master' of https://github.com/OpenCover/opencover