Merge pull request #569 from sbibauw/patch-1

yarn: rename clean to autoclean, add description for certain commands

src/_yarn

@@ -37,14 +37,14 @@
 
 _commands=(
   'access'
-  'cache'
+  'autoclean:Clean and remove unnecessary files from package dependencies'
+  'cache:List or clean every cached package'
   "check:Verify package dependencies agains yarn's lock file"
-  'clean:Cleans and removes unnecessary files from package dependencies'
   'config:Manages the yarn configuration files'
   'generate-lock-entry:Generates a lock file entry'
   'global:Install packages globally on your operating system'
   'help:Show information about a command'
-  'import'
+  'import:Generate yarn.lock from an existing npm-installed node_modules folder'
   'info:Show information about a package'
   'init:Interactively creates or updates a package.json file'
   'install:Install all the dependencies listed within package.json'
@@ -53,16 +53,16 @@ _commands=(
   'list:List installed packages'
   'login:Store registry username and email'
   'logout:Clear registry username and email'
-  'outdated:Checks for outdated package dependencies'
+  'outdated:Check for outdated package dependencies'
   'owner:Manage package owners'
-  'pack:Creates a compressed gzip archive of package dependencies'
-  'publish:Publishes a package to the npm registry'
-  'run:Runs a defined package script'
+  'pack:Create a compressed gzip archive of package dependencies'
+  'publish:Publish a package to the npm registry'
+  'run:Run a defined package script'
   'tag:Add, remove, or list tags on a package'
   'team:Maintain team memberships'
   'unlink:Unlink a previously created symlink for a package'
-  'version:Updates the package version'
-  'versions'
+  'version:Update the package version'
+  'versions:Display version information of currently installed Yarn, Node.js, and its dependencies'
   'why:Show information about why a package is installed'
 )