Add pg_timetable to Database tools (#3239)
Add pg_timetable to Database tools (#3239)

* Add pg_timetable

Github repo: https://github.com/cybertec-postgresql/pg_timetable
License: MIT
Coverage: https://coveralls.io/github/cybertec-postgresql/pg_timetable?branch=master
Goreport: https://goreportcard.com/report/github.com/cybertec-postgresql/pg_timetable

* Update README.md
pconcepcion/awesome-go,jmelfi/awesome-go,avelino/awesome-go,sadlil/awesome-go,theckman/awesome-go