Clean up docs and installation guide

.gitignore

@@ -8,5 +8,4 @@ tmp
 env/
 .tmp/
 dist/
-yarn-error.log
 .sass-cache/

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## dbt 0.19.0 (Release TBD)
 - Fixed issue where data tests with tags were not showing up in graph viz ([docs#147](https://github.com/fishtown-analytics/dbt-docs/issues/147), [docs#156](https://github.com/fishtown-analytics/dbt-docs/pull/156))
+- Clean up development dependencies and docs, fix package installation issue ([docs#164](https://github.com/fishtown-analytics/dbt-docs/issues/164), [docs#165](https://github.com/fishtown-analytics/dbt-docs/pull/165))
 
 ## dbt 0.19.0b1 (October 20, 2020)
 - Add select/deselect option in DAG view dropups. ([docs#98](https://github.com/fishtown-analytics/dbt-docs/issues/98), [docs#138](https://github.com/fishtown-analytics/dbt-docs/pull/138))

README.md

@@ -32,12 +32,6 @@ After cloning this repository, run:
 git submodule update --init --recursive
 ```
 
-Then, install yarn and webpack.
-
-```bash
-npm install -g yarn webpack webpack-cli
-```
-
 You'll also need to install bundler if you don't already have it:
 ```bash
 gem install bundler
@@ -58,14 +52,14 @@ cd -
 To build an index.html file:
 
 ```bash
-yarn install
-webpack
+npm install
+npx webpack
 ```
 
 To run the dev server, first copy your `manifest.json` and `catalog.json` files to
 the `src/` directory. Then run:
 
 ```bash
-yarn install
+npm install
 npm start
 ```