feat: remove vulnerable libs

This requires a change of the http request lib. Now nodesi uses
a native fetch, or you can provide your own http client
implementation.

Previously nodesi used good-guy-http, which is no longer
maintained, so the change in the behavior is that nodesi
does not provide a cache out of the box.

good-guy-http came with the in-memory cache that respected
Cache-Control headers, but the new native fetch implementation
does not provide this feature.

BREAKING CHANGE: change in the default http request library

.editorconfig

@@ -0,0 +1,4 @@
+[*.js]
+indent_style = space
+indent_size = 4
+quote_type = single

.npmignore

@@ -10,3 +10,4 @@ test
 .jshintrc
 .travis.yml
 .nvmrc
+.editorconfig

.travis.yml

@@ -13,4 +13,3 @@ deploy:
 
 after_success:
   - npm run coverage
-  - node_modules/.bin/nyc report --reporter=text-lcov | node_modules/.bin/coveralls