Add pylint_quotes to pylintrc and update readme

.pylintrc

@@ -1,6 +1,7 @@
 [MASTER]
 ignore = ,input
 persistent = yes
+load-plugins = pylint_quotes
 
 [MESSAGES CONTROL]
 disable =

.travis.yml

@@ -5,4 +5,4 @@ python:
 install:
   - "pip install -r requirements.txt"
 script:
-  - "pylint --load-plugins pylint_quotes proxstar"
+  - "pylint proxstar"

README.md

@@ -19,6 +19,8 @@ It is available to house members at [proxstar.csh.rit.edu](https://proxstar.csh.
   - Optionally create a new [git branch](https://git-scm.com/book/en/v2/Git-Branching-Branches-in-a-Nutshell) if your change is more than a small tweak (`git checkout -b BRANCH-NAME-HERE`)
 3. Make your changes locally, commit, and push to your fork
   - If you want to test locally, you should copy `config.py` to `config_local.py`, and talk to an RTP about filling in secrets.
+  - Lint your local changes with `pylint proxstar`
+    - You'll need dependencies installed locally to do this. You should do that in a [venv](https://packaging.python.org/tutorials/installing-packages/#creating-virtual-environments) of some sort to keep your system clean. All the dependencies are listed in [requirements.txt](./requirements.txt), so you can install everything with `pip install -r requirements.txt`. You'll need python 3.6 at minimum, though things should work up to python 3.8.
 4. Create a [Pull Request](https://help.github.com/en/articles/about-pull-requests) on this repo for our Webmasters to review
 
 ## Questions/Concerns