beautify docs

plugins/CategoryUrl/README.md

@@ -1,29 +1,35 @@
-CategoryURL - JBrowse plugin
+# CategoryURL - JBrowse plugin
 
 Add URL parameter "cat" to specify a category of tracks to display.
 All tracks with the given category will be displayed.
 If any "tracks" are specified in the URL, "cat" tracks will be appended to list.
 
-Usage: Add &cat=myCategory
+Usage: Add `&cat=myCategory` to the URL
 Result: all tracts with category "myCategory" will be displayed.
-Sub-categories are supported as well (i.e. "&cat=myCategory/mySubCategory"
+Sub-categories are supported as well (i.e. `&cat=myCategory/mySubCategory`)
 
 The cat= URL parameter allows the display of tracks with the given category 
 defined in the track metadata that are used to group tracks in the hierarchical 
 track selector.  For example:
 
-"category" : "Miscellaneous",
+    "category" : "Miscellaneous",
 
 Example:
-http://<jbrowse>/?data=sample_data/json/volvox&cat=Miscellaneous
-http://<jbrowse>/?data=sample_data/json/volvox&cat=Quantitative/Density
 
-Install / Activate:
+    http://<jbrowse>/?data=sample_data/json/volvox&cat=Miscellaneous
+
+    http://<jbrowse>/?data=sample_data/json/volvox&cat=Quantitative/Density
+
+
+### Install / Activate:
+
+For JBrowse 1.11.6+, copy the `CategoryUrl` directory to the `JBrowse` plugins directory.
+Add this to appropriate `trackList.json` under the plugins section (create section, if it doesn't exist):
+
+    "plugins": [ 
+         'CategoryUrl'
+     ],
+
 
-For JBrowse 1.11.6+, copy the CategoryUrl directory to the JBrowse 'plugins' directory.
-Add this to appropriate trackList.json under the plugins section (create section, if it doesn't exist):
 
-   "plugins": [ 
-        'CategoryUrl'
-    ],