Merge pull request grafana#5 from grafana/chore/add-editorconfig

Chore: Add .editorconfig

Author: aknuds1

.editorconfig

@@ -0,0 +1,20 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 120
+
+[*.go]
+indent_style = tab
+indent_size = 4
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false