updated authorship so that it appears in the correct 'author' page (mine!)

Author: colinta

package.json

@@ -1,7 +1,7 @@
 {
   "name": "FileDiffs",
-  "description": "Shows diffs between the current file, or selection(s) in the current file, and clipboard, another file, or unsaved changes.",
-  "author": "Colin T.A. Gray (colinta), Sebastian Pape (spape), Jiri Urban (jiriurban)",
+  "description": "Shows diffs between the current file, or selection(s) in the current file, and clipboard, another file, or unsaved changes.  With contributions from Sebastian Pape (spape) and Jiri Urban (jiriurban)",
+  "author": "Colin T.A. Gray (colinta)",
   "details": "https://github.com/colinta/SublimeFileDiffs",
   "labels": ["diff/merge"],
   "releases": [