Add support for google chrome

Also fix support for chromium when it hasn't been previously started.
Addresses #20.

tdrop

@@ -508,10 +508,13 @@ create_win_return_wid() {
 		blacklist=$(xdotool search --classname urxvtd)
 		pid=$(pgrep urxvtd)
 		eval "$program_command"
-	elif [[ $program =~ ^chromium ]]; then
+	elif [[ $program =~ ^chromium ]] && pgrep -x chromium; then
 		# this may work fine
 		# pid=$(pgrep -o chromium)
-		pid=$(pgrep -a chromium | awk '!/--type/ {print $1}')
+		pid=$(pgrep -xa chromium | awk '!/--type/ {print $1}')
+		eval "$program_command"
+	elif [[ $program =~ ^google-chrome ]] && pgrep -x chrome; then
+		pid=$(pgrep -xa chrome | awk '!/--type/ {print $1}')
 		eval "$program_command"
 	else
 		eval "$program_command"