Set version to 0.28.1

Builds/rpm/rippled.spec

@@ -1,5 +1,5 @@
 Name:           rippled
-Version:        0.28.1-rc3
+Version:        0.28.1
 Release:        1%{?dist}
 Summary:        Ripple peer-to-peer network daemon
 

doc/CHANGELOG

@@ -16,3 +16,4 @@ A list of rippled version numbers, and the Github pull requests they contain.
 0.28.1-b9: Includes pulls 1026, 1030, 1036, 1037, 1038, 1040, and 1041.
 0.28.1-rc2: Includes pulls 1044
 0.28.1-rc3: Includes pulls 1052 and 1055.
+0.28.1: Includes pulls 1056, 1059 and 1062, 1063. 

src/ripple/protocol/impl/BuildInfo.cpp

@@ -35,7 +35,7 @@ char const* getRawVersionString ()
     //
     //  The build version number (edit this for each release)
     //
-        "0.28.1-rc3"
+        "0.28.1"
     //
     //  Must follow the format described here:
     //