Revert changes to Flutter SDK setup

Merge pull request #111 from alexrintt/master

`v0.7.0`

(#107) Thx clragon! add new contributor to the `README.md`

Merge pull request #100 from lakscastro/master

Rollup `v0.5.0`

Merge pull request #89 from lakscastro/master

Rollup `v0.4.2`

Merge pull request #83 from lakscastro/master

Release hotfix of `/example` project

Merge pull request #67 from lakscastro/master

`v0.4.0` release

Merge pull request #54 from lakscastro/master

`v0.3.1` to fix critical exception on `listFiles` API

(#46) Update plugin version