add plugin build automation

create-plgx-plugin.bat

@@ -0,0 +1,20 @@
+@echo off
+
+set plugin=%cd%\plugin
+set source=%plugin%\source
+
+echo coping source files to plugin\source for clean plugin
+if not exist %source% mkdir %source%
+cp *.cs %source%
+cp *.csproj %source%
+cp *.resx %source% 
+xcopy /S /Y %cd%\Resources %source%\Resources\  >NUL
+xcopy /S /Y %cd%\Properties %source%\Properties\ >NUL
+del %plugin%\*.plgx
+
+echo compiling plugin
+"c:\Program Files (x86)\KeePass Password Safe 2\KeePass.exe" --plgx-create %source% -plgx-prereq-kp:2.41 --plgx-prereq-net:4.0
+
+echo renaming
+ren %source%.plgx KeePassQRCodeView.plgx		
+echo Clean compiled plugin is located in %cd%\plugin