Require way to set extended podspec values

[kebernet]

Authors, License and other values are now warnings and errors from cococapods. Need a way to configure these.

[mithepner]

I found a work around for this. I adapted a solution from @zasadnyy on issue #596.

add this to your shared/build.gradle

j2objcPodspec.doLast {
    println('Modifying generated podspecs to be able to run pod install')
    [getPodspecDebug(), getPodspecRelease()].asList().each {
        File podspec = it

        String text = podspec.text.replace(
                "Pod::Spec.new do |spec|",
                '''Pod::Spec.new do |spec|
  spec.authors = 'authors'
  spec.license = 'license'
  spec.homepage = 'homepage'
  spec.source = { :git => 'git@bitbucket.org:your/repo.git' }''')
        podspec.write(text)
    }
}