Addon install requires an extra step

[givanse]

The blueprint should take care of this:

bower install --save https://github.com/ujifgc/pagedown.git#f1ae0f5626e044f64b937836962a9941c60c7596

Depends on ember-cli/ember-cli#3409

[givanse]

we are planning to drop bower, so this will likely not be fixed. If someone submits a PR it will be accepted.
ember-cli/ember-cli#3409 (comment)