add editorconfig and jshintrc

.editorconfig

@@ -0,0 +1,13 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+

.jshintrc

@@ -0,0 +1,3 @@
+{
+  "browserify": true
+}