[imp] Create markdown README
[#30076] Pagination does not work for components with more than one administrative view
Merge pull request #791 from phproberto/readme

[imp] Create markdown README
Add additional GitHub only files to the build script excludes
Don't package PHPUnit def
More system test fixes, fix CHANGELOG typo.
Incorrect field names used in JTableCorecontent (discovered implementing unit tests)
Code style
Prepare for 3.1.0_beta3 release