Remove warning about unsupported features (#308)

README.md

@@ -144,11 +144,6 @@ specified in files, like `target/` and `.git/` and various other common types
 
 To skip absolutely all ignores, use the `--ignore-nothing` flag.
 
-`.git/info/exclude` and the global `$HOME/.gitignore` and similar ignore files
-[are not supported yet][w-58].
-
-[w-58]: https://github.com/watchexec/watchexec/issues/58
-
 ### Ignore syntax
 
 See the [Glob patterns page][globdoc] for a description of how they work in the