Added more detailed output to lib create
Merge pull request #2009 from pietbrauer/cleanup_lib_create_output

Added more detailed output to lib create
[linter] Remove logic around slashes in URLS

Fix is a bug with nap and has been fixed in nap.

https://github.com/Fingertips/nap/pull/4
Fixes #1998
[linter] Validate screenshots are valid

Closes #2010
[linter] Exclude screenshot validation from other tests
[linter] Validate screenshot URLs return a valid image
Merge pull request #2016 from CocoaPods/screenshots

[linter] Validate screenshots are valid