Docs: add perforce

README.md

@@ -10,7 +10,8 @@ It's __fast__, __highly configurable__ and __well documented__.
 
 Features:
 
-- supports git, mercurial, darcs, bazaar, subversion, cvs, rcs, fossil
+- supports git, mercurial, darcs, bazaar, subversion, cvs, rcs, fossil, accurev,
+  perforce
 - quick jumping between blocks of changed lines
 - apart from signs there is also optional line highlighting
 - fully configurable through global variables (options and mappings)
@@ -102,6 +103,7 @@ Currently the following VCS are supported:
 - rcs
 - fossil
 - accurev
+- perforce
 
 #### quick jumping between changed lines
 

doc/signify.txt

@@ -93,7 +93,8 @@ default values, as long as no "Default:" section is given.
 
     let g:signify_vcs_list = [ 'git', 'hg' ]
 
-Default: ['git', 'hg', 'svn', 'darcs', 'bzr', 'fossil', 'cvs', 'rcs', 'accurev']
+Default: ['git', 'hg', 'svn', 'darcs', 'bzr', 'fossil', 'cvs', 'rcs',
+'accurev', 'perforce']
 
 This variable determines the VCS to check for and in what order. If you only
 use git and mercurial, you can shorten the list to the shown example. If you