Merge pull request #253 from blackpanther9229/branch-alpha-bug

Cattag displaying bug

docs/UserGuide.md

@@ -225,6 +225,7 @@ Categorizes a tag under a defined category.
 Format: `cattag t/TAG [t/MORE_TAGS]…​ CATEGORY`
 
 * Sets the tag(s) in CampusConnect with the specified name `TAG` to fall under the specified `CATEGORY`.
+* 
 * Currently available categories with their respective keywords and colours are:
 
     Category      | Keyword (case sensitive) | Colour
@@ -234,15 +235,18 @@ Format: `cattag t/TAG [t/MORE_TAGS]…​ CATEGORY`
     **Activities**| `activity`               | <span style="color:DodgerBlue"> Blue </span>
     **Networking**| `network`                | <span style="color:LimeGreen"> Green </span>          
     **Mentorship**| `mentor`                 | <span style="color:HotPink"> Pink </span>
+
 * Multiple tags can be categorized to the same category at a time.
 * All tags specified must be valid existing tags.
 * Attempts to set a tag to its current category will cause the whole command to be rejected.
 * Only one category is allowed to be entered per command, i.e. `cattag t/tag1 acads t/tag2 general` is not allowed.
 
 Examples:
-* `cattag t/CS2100 acads` categorizes the tag `CS2100` under `Academics`
-* `cattag t/floorball t/mahjong activity` categorizes both tags `floorball` and `mahjong` under `Activities` 
+* `cattag t/CS2100 acads` categorizes the tag `CS2100` under `Academics` and color of `t/CS2100` become `Gold`.
+* `cattag t/floorball t/mahjong activity` categorizes both tags `floorball` and `mahjong` under `Activities` with color `Blue`. 
+* Not-yet categorized tags have color `Grey` by default.
 
+![cattag response image](images/cattagResponse.png)
 ### Undo a command : `undo`
 
 Undoes the previous command and reverts CampusConnect.

src/main/java/seedu/address/logic/commands/CategorizeTagCommand.java

@@ -21,7 +21,8 @@ public class CategorizeTagCommand extends Command {
 
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Categorizes a tag. Changes all occurrences of the specified tag to the desired category.\n"
-            + "Parameters: " + PREFIX_TAG + "TAG (existing tag label) CATEGORY\n"
+            + "Parameters: " + PREFIX_TAG + "TAG (existing tag label)"
+            + " [" + PREFIX_TAG + "TAG (existing tag label)]... CATEGORY\n"
             + "Example: " + COMMAND_WORD + " " + PREFIX_TAG + "CS1101S acads";
 
     public static final String MESSAGE_CAT_TAG_SUCCESS = "Category of tag(s) %1$s has been changed successfully.";