ALE commands not working (#463)

ALE requires NeoVim >= 0.2.0 or Vim 8 with +timers +job +channel.

Author: forevernull

README.md

@@ -97,7 +97,7 @@ I recommend reading the docs of these plugins to understand them better. Each pl
 * [open_file_under_cursor.vim](https://github.com/amix/open_file_under_cursor.vim): Open file under cursor when pressing `gf`
 * [pathogen.vim](https://github.com/tpope/vim-pathogen): Manage your vim runtimepath 
 * [snipmate.vim](https://github.com/garbas/vim-snipmate): snipmate.vim aims to be a concise vim script that implements some of TextMate's snippets features in Vim
-* [ale](https://github.com/w0rp/ale): Syntax and lint checking for vim (async)
+* [ale](https://github.com/w0rp/ale): Syntax and lint checking for vim (ALE requires NeoVim >= 0.2.0 or Vim 8 with +timers +job +channel)
 * [vim-commentary](https://github.com/tpope/vim-commentary): Comment stuff out.  Use `gcc` to comment out a line (takes a count), `gc` to comment out the target of a motion. `gcu` uncomments a set of adjacent commented lines.
 * [vim-expand-region](https://github.com/terryma/vim-expand-region): Allows you to visually select increasingly larger regions of text using the same key combination
 * [vim-fugitive](https://github.com/tpope/vim-fugitive): A Git wrapper so awesome, it should be illegal