Added .editorconfig and .clang-format

.clang-format

@@ -0,0 +1,4 @@
+---
+IndentWidth: '2'
+
+...

.editorconfig

@@ -0,0 +1,14 @@
+# EditorConfig configuration
+# http://editorconfig.org
+
+# Top-most EditorConfig file
+root = true
+
+# UTF-8 charset, set indent to spaces with width of four,
+# with no trailing whitespaces and a newline ending every file.
+[*]
+charset = utf-8
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true