update the README to include setting PYTHONPATH environment variable

.gitignore

@@ -23,3 +23,4 @@ htmlcov
 .npm-debug.log
 Dockerfile-e
 build/
+.vscode

README.md

@@ -96,6 +96,7 @@ docker-machine create -d virtualbox default
 eval "$(pyenv virtualenv-init -)"
 eval "$(pyenv init -)"
 eval $(/usr/local/bin/docker-machine env default)
+export PYTHONPATH="."
 
 # Some installs don't have /usr/include, required for finding SASL header files
 # This command might fail because of the rootfs is read-only. Refer to the following:
@@ -214,7 +215,7 @@ that we get consistant version installs using the `yarn install` command. Howeve
 should be added using `yarn add <npm package>`. This will add an entry to `package.json` and `yarn.lock`.
 
 Occassionally there will be merge conflicts with `yarn.lock`. To resolve them, use the following (taken 
-from [here](https://github.com/yarnpkg/yarn/issues/1776#issuecomment-269539948).
+from [here](https://github.com/yarnpkg/yarn/issues/1776#issuecomment-269539948)).
 
 ```sh
 git rebase origin/master