Fix contact subcommand which was factored out to a new module

lib/Hush/App.pm

@@ -10,7 +10,7 @@ use Hush::RPC;
 
 my $COMMANDS  = {
     "add"     => \&add,
-    "contact" => \&Hush::List::contact,
+    "contact" => \&Hush::Contact::contact,
     "help"    => \&help,
     "new"     => \&new,
     "remove"  => \&remove,

lib/Hush/Contact.pm

@@ -5,6 +5,7 @@ use Hush::Util qw/barf/;
 use Data::Dumper;
 use File::Spec::Functions;
 use Hush::Logger qw/debug/;
+use File::Slurp;
 
 my $HUSH_CONFIG_DIR     = $ENV{HUSH_CONFIG_DIR} || catdir($ENV{HOME},'.hush');
 my $HUSHLIST_CONFIG_DIR = $ENV{HUSH_CONFIG_DIR} || catdir($HUSH_CONFIG_DIR, 'list');