Add a :pom-location option to fix #1541
lein vcs TASK gives non-stacktrace message when unknown vcs.
signatures should match other defmethods
Document use of the SSH wagon. Fixes #1540.
Merge pull request #1543 from jakemcc/unknown-vcs-results-in-short-error-message

`lein vcs TASK` gives non-stack trace message when unable to detect VCS.
Merge pull request #1542 from jcrossley3/1541

Add a :pom-location option to fix #1541
Merge remote-tracking branch 'upstream/master'