fix: prevent netlify dev from attempting to recursively call itself

The CLI detects different framework commands in package.json, and will throw
if it detects `netlify dev` in the default script while running `netlify dev`
in order to avoid recursively calling itself.

By removing the `netlify dev` from the `start` and `dev` scripts and adjusting
the CLI logic to recognize `netlify dev:exec` as distinct from `netlify:dev`,
we can get this project working as expected.

Also updates package.json dependencies.

see also:
#26
netlify/cli#1798

Author: ctjlewis

.gitignore

@@ -1,5 +1,11 @@
 # See https://help.github.com/ignore-files/ for more about ignoring files.
 
+# .env
+.env
+
+# eslint cache
+.eslintcache
+
 # dependencies
 /node_modules
 

README.md

@@ -96,10 +96,10 @@ Click the [Deploy to Netlify Button](https://app.netlify.com/start/deploy?reposi
     npm run bootstrap
     ```
 
-10. Run project locally
+10. Start developing!
 
     ```bash
-    npm start
+    netlify dev
     ```
 
 ## TLDR; Quick Deploy

netlify.toml

@@ -6,5 +6,5 @@
   publish = "build"
 
 [dev]
-  # Local dev command. A.k.a npm start
-  command = "react-scripts start"
+  # Call react-scripts start
+  command = "npm start"