Strip colon from Ruby symbols

[wjlroe]

This means that a symbol :method_name will find the method even though
it's being referred to by a symbol.

[wjlroe]

@jacktasia ah, yes, I just forgot to open a PR

[coveralls]

Coverage decreased (-0.6%) to 99.39% when pulling 08a78c9 on wjlroe:strip-colon-from-ruby-symbols into 590773b on jacktasia:master.

[wjlroe]

I shall add some tests once I've gotten the tests to run on my machine

[jacktasia]

Awesome, thanks!

FWIW it should be as simple as making this test:

(ert-deftest dumb-jump-process-symbol-by-lang-test ()
  (let ((result (dumb-jump-process-symbol-by-lang "elisp" "somefunc"))
        (result2 (dumb-jump-process-symbol-by-lang "clojure" "myns/myfunc")))
    (should (string= result "somefunc"))
    (should (string= result2 "myfunc"))))

look like this instead:

(ert-deftest dumb-jump-process-symbol-by-lang-test ()
  (let ((result (dumb-jump-process-symbol-by-lang "elisp" "somefunc"))
        (result2 (dumb-jump-process-symbol-by-lang "clojure" "myns/myfunc"))
        (result3 (dumb-jump-process-symbol-by-lang "ruby" ":myrubyfunc")))
    (should (string= result "somefunc"))
    (should (string= result2 "myfunc"))
    (should (string= result3 "myrubyfunc"))))