Add methodscount badge to the project.

[zugaldia]

Likely on the README.md file.

[zugaldia]

@cammace Let's do this when we release 1.1.0, #44 should help with the method count.

[cammace]

Heres the updated readme and the #29 PR. The badge found on methodscount.com is static and wont change when new SDK versions arrive. I'll look for a more automated solution.

[cammace]

As mentioned above, method count badge is static and will need to be updated with each new release, once added to release notes, we can close this issue, #29 has been merged and 1.1.0 README.md is up!

[zugaldia]

I added a note to update the badge in our launch checklist in #55. We're ready to close this one. Thanks @cammace !