Merge pull request #310 from sheldon/describe-fixes

Describe all packages fixed

pkg/omf/functions/cli/omf.cli.describe.fish

 function omf.cli.describe -a name
-  switch (count $argv)
-  case 1
   omf.packages.describe $name
   return 0
-  case '*'
-    echo (omf::err)"Invalid number of arguments"(omf::off)
-    return 1
-  end
 end

pkg/omf/functions/packages/omf.packages.describe.fish

 function omf.packages.describe -a name
   if test (count $argv) -eq 0
     for package in (omf.packages.list --database)
-      echo $package - (omf.describe $package)
+      echo $package - (omf.packages.describe $package)
     end
   else
     set package_path $OMF_PATH/db/pkg/$name