Updated Server Client level API (markdown)

Server-Client-level-API.md

@@ -54,8 +54,8 @@ trait SbtClient extends Closeable {
    * @return A set of "completion" strings that could be used as sbt commands.  These
    *         completions are triples of: 
    *         - the string to append
-   *         - the string to display to users
-   *         - a flag?
+   *         - the the full token being completed (for display to users)
+   *         - a flag denoting if this completion is for an empty string.
    */
   def possibleAutocompletions(partialCommand: String, detailLevel: Int): Future[Set[Completion]]