Update instructions about dev environment (#220)

Author: serras

.vscode/extensions.json

@@ -2,7 +2,7 @@
   // See http://go.microsoft.com/fwlink/?LinkId=827846
   // for the documentation about the extensions.json format
   "recommendations": [
-    "DigitalAssetHoldingsLLC.ghcide",
+    "haskell.haskell",
     "hoovercj.haskell-linter",
     "vigoo.stylish-haskell",
     "EditorConfig.EditorConfig"

DEVELOPMENT.md

@@ -1,37 +1,23 @@
 # Development recommendations
 
-Before continuing, make sure you've read:
+Most of our developers use using [Visual Studio Code](https://code.visualstudio.com/). In that case, you just have to open the project, and install the recommended extensions. Before continuing, make sure you've read:
 
-- [Alejandro's post on setting up a Haskell development environment](https://www.47deg.com/blog/setting-up-haskell/).
+- [Alejandro's post on setting up a Haskell development environment](https://www.47deg.com/blog/setting-up-haskell/), but forget about the Visual Studio Code configuration outlined there.
 - [Kowainik's Haskell Style Guide](https://kowainik.github.io/posts/2019-02-06-style-guide).
 
-## VSCode extensions
+## Visual Studio Code extensions
 
-To make our lives easier while developing in Haskell, we use the following extensions:
+To make our lives easier while developing in Haskell, we use a set of recommended extensions. The first time you open the project, the editor should suggest to install all those you do not have,
 
-- [ghcide](https://marketplace.visualstudio.com/items?itemName=DigitalAssetHoldingsLLC.ghcide), the best thing that happened to Haskell for editors/IDEs! ❤️
+- [Haskell](https://marketplace.visualstudio.com/items?itemName=haskell.haskell), the best thing that happened to Haskell for editors/IDEs! ❤️
 - [hlint](https://marketplace.visualstudio.com/items?itemName=hoovercj.haskell-linter), another great extension to have suggestions and refactors in Haskell 🛠
 - [stylish-haskell](https://marketplace.visualstudio.com/items?itemName=vigoo.stylish-haskell), the formatter we use to prettify the code 💅🏼
 - [editorconfig](https://marketplace.visualstudio.com/items?itemName=EditorConfig.EditorConfig), to have consistency between different editors and envs 🐀
 
-## stylish-haskell 💅🏼
+## Styling 💅🏼
 
-Regarding the formatter, we use the `master` version of [stylish-haskell](https://github.com/jaspervdj/stylish-haskell) to be able to use language pragmas with lowercase, so you'll need to do this locally:
+We loosely follow [Kowainik's Haskell Style Guide](https://kowainik.github.io/posts/2019-02-06-style-guide). In order to automate styling, we use [stylish-haskell](https://github.com/jaspervdj/stylish-haskell), for which we provide a `.stylish-haskell.yaml` configuration file.
 
-```sh
-$ git clone https://github.com/jaspervdj/stylish-haskell
-$ ...
-$ cd stylish-haskell && stack install
-```
-
-We don't provide any git hook or tool that enforces our style. However, before you propose any PR please make sure to run `stylish-haskell` yourself, and to follow our style guide mentioned above to the extent possible. 😊
-
-If you wan't to automate this for your VSCode, add the following to your `.vscode/settings.json`:
-
-```json
-{
-  "editor.formatOnSave": true
-}
-```
+We don't provide any git hook or tool that enforces our style. By default the provided `.vscode/settings.json` file runs styling on every save. However, before you propose any PR please make sure to run `stylish-haskell` yourself, and to follow our style guide mentioned above to the extent possible. 😊
 
 Happy hacking! 👏🏼