[Analyzer] Only warn when there is a minimum deployment target mismatch

Adding Modules to the excluded list folders in order make Today Widgets sign in properly, might fix #1546

[Copy Resources] Resolve various problems with xcasset bundles

[README] Goal updates

Allow support for pods with xcasset bundles using `:path`.

Closes #1549
Closes #3384
Closes #3358

[pod repo list] Fix issue showing the URL for git

Allow the specification of custom module map files

This should be in a PR.

This reverts commit 05d4076f.

[README] Include our project goals