Added .editorconfig files http://editorconfig.org/

Author: Federico Fissore

app/.editorconfig

@@ -0,0 +1,16 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+charset = utf-8
+
+[*.{md,adoc}]
+indent_style = space
+trim_trailing_whitespace = false

arduino-core/.editorconfig

@@ -0,0 +1,16 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+charset = utf-8
+
+[*.{md,adoc}]
+indent_style = space
+trim_trailing_whitespace = false