[SourcesManager] Require set before using it

Update copy around updating to the latest build

[Issue Template] Update for pod env & ask for project

Closes #5274

Release 1.0.0

# gpg: Signature made Tue May 10 09:55:44 2016 CDT using RSA key ID 15DDA856
# gpg: Good signature from "Samuel Giddins <segiddins@segiddins.me>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7B19 37A9 CF66 AEF6 52C9  4090 0119 5BB3 15DD A856

[PodXCConfig] Use recursive dependent targets

[InstallationOptions] Add #share_schemes_for_development_pods

This allows for opting out of sharing schemes for development pods.
By default, the current behavior is kept -- all dev pods have their
schemes shared. By setting the option to `nil` or `false`, no schemes
are shared. Otherwise, an array can be passed, and only dev pod names that
match elements of that array will have their schemes shared.

Improve messaging when dependencies conflict

[Travis] Update RubyGems

[Validator] Validate that resource bundles contain resources