Updated version number to 1.1

Proposed release notes for version 1.1:

* Updated the README
* Improved error messages and the code in general.

* Replaced all occurrences of `typeof` with `__typeof__` which fixes build errors for some users.
* Fix clang warning about shadowing local variables.
* Fixed crash that could occur when the 1Password extension is invoked before the web view is fully loaded.