[Close #88] Bare-bones editing toolbar

RSpec: 687 examples, 0 failures
RuboCop: 177 files inspected, no offenses detected
Merge pull request #138 from jdickey/issue-88

[Close #88] Bare-bones editing toolbar added.

RSpec: 687 examples, 0 failures
RuboCop: 177 files inspected, no offenses detected