Update README [skip ci]
Update README [skip ci]

logs table migration is now duplicated, so skip the steps about
loading the logs table from travis-logs.

final-ci/travis-core,kidaa/travis-core,GistIcon/travis-core,jantman/travis-core,travis-ci/travis-core,developerfm/travis-core,Tiger66639/travis-core,final-ci/travis-core,GistIcon/travis-core,final-ci/travis-core,Tiger66639/travis-core,developerfm/travis-core,Tiger66639/travis-core,GistIcon/travis-core,kidaa/travis-core,developerfm/travis-core,travis-ci/travis-core,kidaa/travis-core,travis-ci/travis-core,jantman/travis-core