Add build.bat (by Darkice).

Installer/build.bat

@@ -0,0 +1,14 @@
+REM compile x64
+call "%VS110COMNTOOLS%\..\..\VC\vcvarsall.bat" x64
+devenv.com ..\Vocaluxe.sln /Rebuild "InstallerWin|x64"
+ 
+REM remove old x64 executables if found and rename
+if exist "..\Output\Vocaluxe_x64.exe" del "..\Output\Vocaluxe_x64.exe"
+ren "..\Output\Vocaluxe.exe" "Vocaluxe_x64.exe"
+ 
+REM compile x86
+call "%VS110COMNTOOLS%\..\..\VC\vcvarsall.bat" x86
+devenv.com ..\Vocaluxe.sln /Rebuild "InstallerWin|x86"
+ 
+REM compile installer
+makensis installer.nsi