Add .editorconfig

.editorconfig

@@ -0,0 +1,27 @@
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.{js,py,go}]
+charset = utf-8
+
+[*.go]
+indent_style = space
+indent_size = 2
+
+[*.{js,jsx,ts,tsx}]
+indent_style = space
+indent_size = 2
+
+[Makefile]
+indent_style = tab
+
+[{package.json,.travis.yml}]
+indent_style = space
+indent_size = 2