fix typos in help, add missing ninesixty import
disable test for --run until implemented
switch test to pending
Merge pull request #243 from mojavelinux/help-typo

fix typos in help, add missing ninesixty import
more detailed exception message when rendering fails
Merge 7f6931d55028b9bfdfd1fe2d4b729883bc253912 into 7c8b4e70ac70d981cc456c4965ffe63dce5f0deb
Joining backtrace array using newline