Merge branch 'tiziano88-dartfmt'

README.md

@@ -136,6 +136,9 @@ Here is the link to the installation: https://golang.org/doc/install
 * `rustfmt` for __Rust__.
 It can be installed using `cargo`, the Rust package manager. Up-to-date installation instructions are on the project page: https://github.com/nrc/rustfmt/#installation.
 
+* `dartfmt` for __Dart__.
+Part of the Dart SDK (make sure it is on your PATH). See https://www.dartlang.org/tools/dartfmt/ for more info.
+
 How can I change the behaviour of formatters, or add one myself?
 ----------------------------------------------------------------
 If you need a formatter that is not among the defaults, or if you are not satisfied with the default formatting behaviour that is provided by vim-autoformat, you can define it yourself.

plugin/defaults.vim

@@ -203,3 +203,11 @@ if !exists('g:formatters_rust')
     let g:formatters_rust = ['rustfmt']
 endif
 
+" Dart
+if !exists('g:formatdef_dartfmt')
+    let g:formatdef_dartfmt = '"dartfmt"'
+endif
+
+if !exists('g:formatters_dart')
+    let g:formatters_dart = ['dartfmt']
+endif