Switch to yarn for dependencies (#14)

* Switch to yarn for dependencies

* Adding other files

* Update readme

.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.{js,json,yml}]
+charset = utf-8
+indent_style = space
+indent_size = 2

.gitignore

@@ -4,6 +4,13 @@
 /node_modules
 /.pnp
 .pnp.js
+.yarn/*
+!.yarn/cache
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
 
 # testing
 /coverage