iOS - Support for third party frameworks and ti.current modules

- Add support for multiple third party frameworks
- Support both relative path and full path for framework directory 
- Change `--imports` options to `--F` because `--imports` is already used
- Remove duplicate flags
Remember that `opts` is a clone of `options`. We need the frameworks there are well otherwise it won't compile:
`opts.thirdPartyFrameworks = options.thirdPartyFrameworks = options.thirdPartyFrameworks.concat(thirdPartyFrameworks);`