Add editorconfig file

.editorconfig

@@ -0,0 +1,22 @@
+# Check http://editorconfig.org for more information
+# This is the main config file for this project:
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+[*.{c,h,cpp,hpp}]
+indent_size = 4
+
+[*.qml]
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false
+max_line_length=120