Add Prettier with tslint plugin and precommit hook (#9)

* Add prettier, pre-commit hook, config and docs

* Add prettier ignore for templates as failed to parse

* Format codebase using prettier

* fix errors

* remove the tslint prettier plugin

* package-lock.json

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,7 +3,7 @@
 The following has been addressed in the PR:
 
 * [ ] There is a related issue
-* [ ] All code matches the [style guide](https://github.com/dojo/meta/blob/master/STYLE.md)
+* [ ] All code has been formatted with [`prettier`](https://prettier.io/) as per the [readme code style guidelines](./../#code-style)
 * [ ] Unit or Functional tests are included in the PR
 
 <!--

.prettierignore

@@ -0,0 +1 @@
+src/templates

README.md

@@ -47,7 +47,17 @@ It's also possible to generate a [Custom Element](https://www.w3.org/TR/2016/WD-
 ## How do I contribute?
 
 We appreciate your interest!  Please see the [Dojo 2 Meta Repository](https://github.com/dojo/meta#readme) for the
-Contributing Guidelines and Style Guide.
+Contributing Guidelines.
+
+### Code Style
+
+This repository uses [`prettier`](https://prettier.io/) for code styling rules and formatting. A pre-commit hook is installed automatically and configured to run `prettier` against all staged files as per the configuration in the projects `package.json`.
+
+An additional npm script to run `prettier` (with write set to `true`) against all `src` and `test` project files is available by running:
+
+```bash
+npm run prettier
+```
 
 ### Installation