bump version to v0.1.5 (open-mmlab#83)

bump version to v0.1.4 (open-mmlab#78)

bump version to v0.1.3 (open-mmlab#70)

bump version 0.1.2 (open-mmlab#45)

bump version to v0.1.1 (open-mmlab#42)

* bump version to v0.1.1

* update readme:

* update copyright

* rephrase

Rename the package name to openmim (open-mmlab#26)

* rename the package name of mim to openmim

* add README.md in package info

* update README.md