doc: vim-easycomplete supports ultisnips. More info: <https://github.…

…com/jayli/vim-easycomplete#snippet-support> (#1438)

README.md

@@ -12,7 +12,8 @@ speed being one of them.
 In this demo I am editing a python file. I first expand the `#!` snippet, then
 the `class` snippet. The completion menu comes from
 [YouCompleteMe](https://github.com/Valloric/YouCompleteMe), UltiSnips also
-integrates with [deoplete](https://github.com/Shougo/deoplete.nvim), and more. I can
+integrates with [deoplete](https://github.com/Shougo/deoplete.nvim),
+[vim-easycomplete](https://github.com/jayli/vim-easycomplete) and more. I can
 jump through placeholders and add text while the snippet inserts text in other
 places automatically: when I add `Animal` as a base class, `__init__` gets
 updated to call the base class constructor. When I add arguments to the

doc/UltiSnips.txt

@@ -1784,6 +1784,10 @@ offers out of the box completion dialogue support for it too.
 deoplete - The successor of neocomplete is also supported. The completion 
 source is called 'ultisnips'.
 
+vim-easycomplete - Vim-EasyComplete needs ultisnips and vim-snippets for 
+snippets support. This two plugin is compatible with EasyComplete out of
+the box. More information: <https://github.com/jayli/vim-easycomplete>
+
 unite - UltiSnips has a source for unite. As an example of how you can use
 it add the following function and mappings to your vimrc: >