Add codecov config

Mainly to prevent codecov from commenting on PR's, which is very frustrating.

Author: SpaceK33z

.editorconfig

@@ -3,3 +3,7 @@ root = true
 [*.js]
 indent_style=tab
 trim_trailing_whitespace=true
+
+[*.yml,package.json]
+indent_style = space
+indent_size = 2

codecov.yml

@@ -0,0 +1,17 @@
+codecov:
+  branch: master
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+  status:
+    project:
+      default:
+        target: auto
+    patch:
+      default:
+        target: auto
+    changes:
+      default:
+        branches: null
+comment: off