Set up (very) simple mock repo for testing
More complete test repo, add empty test files
Add functions to set up test projects and repo
Add dummy packrat package to test repo
Fix bug: packrat can't find sources for packages in local repos (#10)
Fix bug: dependency information for manually specified source packages should be calculated from those packages' DESCRIPTIONS, not from installed packages
First passing test (make sure we write a lockfile)
Always install packages in dependency order (#11)
Provide a means to suppress prompts in ::snapshot() and ::restore()
Fix bug: restore() doesn't check correct package db when used externally
Add tests for ::restore()
Merge remote-tracking branch 'origin/master' into packrat-tests

Conflicts:
	R/install.R
	R/packrat.R
	R/snapshot.R
Merge pull request #12 from rstudio/packrat-tests

Add testthat tests run with test_package("packrat")