Update README.md

[ozgurg]

Make sure these boxes are checked before submitting your PR - thank you!

• Pull request is being merged to the develop branch.
• There's a reference to an Issue which this solves.
• For new features a sample has been added to the sample app
  illustrating this feature's behaviour.
• Commits are squashed to a single commit.

I fixed some problems in README.md.

• I changed documentation link. The previous was not correct
• I changed "compile" to "implementation". It's deprecated.

Note: I didn't checked "There's a reference to an Issue which this solves." I think that problem is so minor.