added qt Version 5.5.1 to ci script for windows

CI/ci-windows.bat

@@ -39,6 +39,10 @@ set GENERATOR=Visual Studio %VS_COMPILERVERSION_SHORT% %VS_EDITION_YEAR%%ARCH_VS
 set VS_PATH="C:\Program Files (x86)\Microsoft Visual Studio %VS_COMPILERVERSION_LONG%\Common7\IDE\devenv.com"
 
 :: determine Qt Version and set variables
+if "%QT_VERSION%" == "Qt5.5.1" (
+set QT_REV_LONG=5.5.1
+set QT_REV=5.5
+)
 if "%QT_VERSION%" == "Qt5.6.2" (
 set QT_REV_LONG=5.6.2
 set QT_REV=5.6