added editorconfig

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

.gitignore

@@ -9,6 +9,7 @@
 .DS_Store
 # a .bashrc may be added to customize the build environment
 .bashrc
+.editorconfig
 .gopath/
 .go-pkg-cache/
 autogen/

contrib/editorconfig

@@ -0,0 +1,13 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 4
+trim_trailing_whitespace = true
+
+[*.md]
+indent_size = 2
+indent_style = space