API interface summaries
Modified existing comments in IGitDatabaseClient, IMiscellaneousClient and
ITeamsClient. Hopefully for valid reasons.
API client constructors documented
IConnection documented
Instatiate is not a word! Fixed typo
Also expanded the IGitDatabaseClient summary
Implement labels CRUD
Apply review comments
Add disposable
Fix URI
Apply more review comments
Fixing projects
Fix validation logic
Update regex expression
Remove null check
Add null checks in constructor
Merge pull request #256 from andrerod/master

Implement labels CRUD
Merge pull request #253 from pmacn/feature/documentation

Documentation
Modified Octokit project to run custom build task that pulls down
interface comments to implementations.
Updating CustomBuildTask.dll. Changed files are now written as UTF-8
Merge pull request #257 from pmacn/feature/pull_down_documentation_comments

Custom build task for copying documentation comments added
Add comments to concrete types

We now have a build task that copies comments from interface to
implementation.