remove extra commas

Author: fangq

JData_specification.md

@@ -790,7 +790,7 @@ Such data can also be stored in JSON/UBJSON in two forms:
    [
        {"Name": "Andy",   "Age": 21, "Degree": "BS", "Height": 69.2},
        {"Name": "William","Age": 21, "Degree": "MS", "Height": 71.0},
-       {"Name": "Om",     "Age": 22, "Degree": "BE", "Height": 67.1},
+       {"Name": "Om",     "Age": 22, "Degree": "BE", "Height": 67.1}
    ]
 ```
 
@@ -857,7 +857,7 @@ can be represented by the below JSON structure
                  {"_TreeNode_(node2.2): data2.2}
              ]
          },
-         {"_TreeNode_(node3)": data3},
+         {"_TreeNode_(node3)": data3}
      ]
   }
 ```
@@ -879,7 +879,7 @@ about the tree nodes, for example
                  {"_TreeNode_(node2.2)::NodeID=5,ParentID=3": data2.2}
              ]
          },
-         {"_TreeNode_(node3)::NodeID=6,ParentID=1": data3},
+         {"_TreeNode_(node3)::NodeID=6,ParentID=1": data3}
      ]
   }
 ```
@@ -1142,7 +1142,7 @@ of each node is listed below on the right side:
          },
          {                                          <- [2,3]
              "_TreeNode_(node3)": data3             <- [2,3,1], or [[2,3]]
-         },
+         }
      ]
   }
 ```

README.md

@@ -26,7 +26,7 @@ draft of this file specification, including
     RFC (Request for comments) commit (where the entire file is removed
     and re-added so that every line appears in such comment). One can
     write short comments as well as post replies on this RFC page. 
-  - The latest RFC commit is based on Draft 1 (version v0.6). Please use
+  - The latest RFC commit is based on **Draft 1 (version v0.6)**. Please use
     [this link](https://github.com/fangq/jdata/commit/f8fc8f1b814e7a4654b7b0092de15eaafa94d3da) to comment.
   - To add a comment, you need to first register a github account, and then 
     browse the above RFC page. When hovering your cursor over each line, a