Fix build setup to be compatible with latest Federalist release (#211)

* Remove bundler install tasks from NPM prepare script

**Why**: Required for interoperability with Federalist pending upcoming platform changes.

* Remove npm install from Federalist script

**Why**: Previously needed because Federalist would only install dependencies, and we rely on devDependencies for the site build. This is changing in an upcoming Federalist release where all dependencies will be installed.

Makefile

@@ -8,12 +8,6 @@ ifdef SITE_PREFIX
 	OUTPUT_DIR = ./_site
 endif
 
-install-jekyll: install-bundler
-	bundle check || bundle install
-
-install-bundler:
-	gem list -i bundler || gem install bundler
-
 start: start-docs start-assets
 
 start-docs:

README.md

@@ -11,10 +11,11 @@ The following dependencies are required to build the documentation and assets wi
 - [Ruby](.ruby-version)
 - [Node.js](.nvmrc)
 
-After satisfying the above language dependencies and cloning this repository, install package dependencies with `npm`:
+After satisfying the above language dependencies and cloning this repository, install package dependencies:
 
 ```
 npm install
+bundle install
 ```
 
 In development, build the documentation site with assets, watch source files for changes, and serve the compiled site at [localhost:4000](http://localhost:4000) by running:

package.json

@@ -37,8 +37,7 @@
     "test-pa11y": "make test-runner-pa11y",
     "test-jest": "make test-runner-jest",
     "build": "make build",
-    "federalist": "npm install && make build-assets",
-    "prepare": "make install-jekyll",
+    "federalist": "make build-assets",
     "prepublishOnly": "make lint && make clean && make build-assets build-package"
   },
   "files": [