Help Consistency

- Added note about frequent releases to the shortUsage output, so it
  is now consistent with that of "version".

src/task.cpp

@@ -194,7 +194,9 @@ static void shortUsage (Config& conf)
 
   std::cout << table.render ()
             << std::endl
-            << "See http://www.beckingham.net/task.html for the latest releases and a full tutorial."
+            << "See http://www.beckingham.net/task.html for the latest releases and a "
+            << "full tutorial.  New releases containing fixes and enhancements are "
+            << "made frequently."
             << std::endl
             << std::endl;
 }
@@ -205,7 +207,7 @@ static void longUsage (Config& conf)
   shortUsage (conf);
 
   std::cout
-    << "ID is the numeric identifier displayed by the 'task list' command" << "\n"
+    << "ID is the numeric identifier displayed by the 'task list' command." << "\n"
     <<                                                                         "\n"
     << "Tags are arbitrary words, any quantity:"                            << "\n"
     << "  +tag               The + means add the tag"                       << "\n"