Converts images to .xcassets
Merge branch 'feature/icon_tidyup' into develop

* feature/icon_tidyup:
  Converts images to .xcassets
Removes references to GIF Finder
Updates copyright reference
Merge branch 'feature/code_tidyups' into develop

* feature/code_tidyups:
  Updates copyright reference
  Removes references to GIF Finder
Updates requirements, installation instructions and code examples
Merge branch 'release/v1.1'