Support suppression of reading of pr description for CHANGELOG.md content

[zakhenry]

I use https://github.com/conventional-changelog/gulp-conventional-changelog to build my changelog from commits, which conflicts with the new pr-bumper functionality. The pr-bumper.json file should be configurable to suppress this feature if not desired.

[job13er]

Valid point. I'm not sure how quickly we (or I) will get to this though. In the meantime, you can explicitly install the version before the CHANGELOG.md stuff using npm install -g pr-bumper@0.3.5 or you can submit a PR with the change yourself. The code where you'd want to put it is probably right around here for reading more info from .pr-bumper.json and here for actually skipping the check.

You could probably just do a check on the config option and return a Promise.resolve() in the case you want to skip prepending the CHANGELOG.md.

[job13er]

Also, if you do opt for the PR route (pretty please), then please also update the README.md with some info on the new option in .pr-bumper.json :)