contributing.md - improved #Local previews section (#1645)

* contributing.md - improved #Local previews section

* contributing.md - added the 'npm run bootstrap' step

.github/CONTRIBUTING.md

@@ -122,28 +122,18 @@ Even though bundled in this repo, the website is regarded as a separate project.
 
 ### Local previews
 
-It is recommended to exclude `./website/public/` from your editor if you want efficient searches.
-
-To install the required node modules, type:
-
-```bash
-npm install && cd website && npm install && cd ..
-```
-
-For local previews on http://localhost:4000, type:
-
-```bash
-npm run web:start # that gets you just the website. if you need companion, etc. you can use `npm start` instead
-```
-
-This will watch the website, as well as Uppy, as the examples, and rebuild everything and refresh your browser as files change.
+1. `npm install`
+2. `npm run bootstrap`
+3. `cd website && npm install && cd ..`
+4. `npm start`
+5. Go to http://localhost:4000. Your changes in `/website` and `/packages/@uppy` will be watched, your browser will refresh as files change.
 
 Then, to work on, for instance, the XHRUpload example, you would edit the following files:
 
 ```bash
-${EDITOR} src/core/Core.js \
-  src/plugins/XHRUpload.js \
-  src/plugins/Plugin.js \
+${EDITOR} packages/@uppy/core/src/index.js \
+  packages/@uppy/core/src/Plugin.js \
+  packages/@uppy/xhr-upload/src/index.js \
   website/src/examples/xhrupload/app.es6
 ```
 

website/src/_template/contributing.md

@@ -124,28 +124,18 @@ Even though bundled in this repo, the website is regarded as a separate project.
 
 ### Local previews
 
-It is recommended to exclude `./website/public/` from your editor if you want efficient searches.
-
-To install the required node modules, type:
-
-```bash
-npm install && cd website && npm install && cd ..
-```
-
-For local previews on http://localhost:4000, type:
-
-```bash
-npm run web:start # that gets you just the website. if you need companion, etc. you can use `npm start` instead
-```
-
-This will watch the website, as well as Uppy, as the examples, and rebuild everything and refresh your browser as files change.
+1. `npm install`
+2. `npm run bootstrap`
+3. `cd website && npm install && cd ..`
+4. `npm start`
+5. Go to http://localhost:4000. Your changes in `/website` and `/packages/@uppy` will be watched, your browser will refresh as files change.
 
 Then, to work on, for instance, the XHRUpload example, you would edit the following files:
 
 ```bash
-${EDITOR} src/core/Core.js \
-  src/plugins/XHRUpload.js \
-  src/plugins/Plugin.js \
+${EDITOR} packages/@uppy/core/src/index.js \
+  packages/@uppy/core/src/Plugin.js \
+  packages/@uppy/xhr-upload/src/index.js \
   website/src/examples/xhrupload/app.es6
 ```