fixing build script to be able to build a release build.

Author: craiggwilson

build.fsx

@@ -5,7 +5,7 @@ open Fake.AssemblyInfoFile
 
 let config = getBuildParamOrDefault "config" "Release"
 let baseVersion = getBuildParamOrDefault "baseVersion" "1.10.0"
-let preRelease = getBuildParamOrDefault "preRelease" "local"
+let preRelease = getBuildParamOrDefault "preRelease" ""
 let getComputedBuildNumber() = 
     let result = Git.CommandHelper.runSimpleGitCommand currentDirectory "describe HEAD^1 --tags --long --match \"v[0-9].[0-9].[0-9]*\""
     let m = System.Text.RegularExpressions.Regex.Match(result, @"-(\d+)-")