add Apache license headers to source files
first pass at Apache LICENSE and NOTICE files
enforce UTF-8 encoding for python and ruby sources
update carbonite, tools.cli, and jgrapht dependencies to released versions
Merge branch 'master' into dependency-versions
update LICENSE/NOTICE to assume source-only distribution
update README to reflect ASF license.
Merge pull request #768 from ptgoetz/dependency-versions

Update Dependencies to Released Versions
Merge pull request #767 from ptgoetz/apache-headers

Add Apache License Headers