v0.2.8

This release adds:

• New function addLocalPackage() to add source or pre-built packages from a local directory (#23).
• Updates for R 3.4.0 on macOS (#82; PR #84; PR #86) @vnijs
• Improve documentation for pkgPath (#85)
• Fix bug in makeRepo() when creating repo with multiple package types

This version was not released to CRAN