Update contributing guidelines
meeting lithium convention
Fix Drupal project installation paths

Fixes #15
Refactor tests
Use composer var pattern, ref #12
Update tests to latest composer
Remove less desirable types, fixes #18
Implement custom install paths, fixes #10
Fix variable case
Mark types as stable
Change to installer-paths
Fix build
Fix build for real
Docs for custom install paths
Add drupal-profile and drupal-drush types. Fixes #6, #23
Implement Aura package types: package and include
Change inflectPackageName to inflectPackageVars
Docs, tests an inflect to Vendor.Name for Aura
Allow package names without a vendor. Fixes #25
Add installer to support SilverStripe. Fixes GH-26.