Rewrite error message to not include "?"

I found this error with a question mark confusing and annoying because
it is displayed in the minibuffer and looks like a prompt that would be
requesting a yes/no answer. I've rewritten it to not ask a question.
Add latest-clojure-libraries-update-dependency-version

This command is invoked on an expression like [org.clojure/clojure
"1.2.0"] with the point at org.clojure/clojure, and this command will
update the version to the latest version.
Fix latest-clojure-libraries-update-dependency-version

Previous version left two copies of the looked up dependency and deleted
the next dependency in the list, if one existed.
Documented latest-clojure-libraries-update-dependency-version in README
Add inject support to latest-clojure-libraries-update-dependency-version

I haven't tested this and I don't know if pomegranate can update
existing dependencies.
Merge pull request #5 from scottjad/master

Add latest-clojure-libraries-update-dependency-version