message: Clean Up DEVELOPERS.md
  Fix formatting in DEVELOPERS.md, "Things To Avoid" section.
  Clean up grammar/readability in "Things To Avoid" section.
diff: @@ -6,12 +6,13 @@ $ yarn lerna bootstrap
  ```
  # Things to Avoid
  -You should not be using the "tsc" command in terminal. Calling "tsc" in a directory WITHOUT a tsconfig file which informs tsc the
  -correct directory to install files would lead to files useful for translating TS to JS (ended with d.ts and d.ts.map)
  -installed in the wrong location.
  +You should not be using the `tsc` command in terminal. Doing so WITHOUT a tsconfig file
  +(which informs tsc where to install files) would lead to translation files
  +(ending with `d.ts` and `d.ts.map`) installed in an incorrect location.
  +
  +If this happens, navigate to the BitGoJs directory and run `git clean -f -d` to remove
  +any errant files. Avoid using npm commands and stick with yarn.
  -If this happens, make sure you are in BitGoJs directory and run "git clean -f -d" to get rid of the files
  -Avoid using npm commands and stick with yarn.
  # Running tests
  Modules typically provide both unit and integration tests.
  