I moved DHTMLParser to core App folder.
I missed "," after "dependencies":

{
	"name": "coreapp",
	"description": "A minimal D application.",
	"copyright": "Copyright © 2014, Suliman",
	"authors": ["Suliman"],
	"dependencies": {
	},
	"subPackages": "./DHTMLParser"
}

and now I have got error:

F:\Dima\1\CoreApp>dub
Building coreapp ~master configuration "application", build type debug.
Compiling using dmd...
source\app.d(6): Error: module dhtmlparser is in file 'dhtmlparser.d' which cann
ot be read
import path[0] = source
import path[1] = C:\D\dmd2\windows\bin\..\..\src\phobos
import path[2] = C:\D\dmd2\windows\bin\..\..\src\druntime\import
FAIL .dub\build\application-debug-windows-x86-dmd_2066-F6963A6398E4BF11AA7988E6B
7890DD9\ coreapp executable
Error executing command run: dmd failed with exit code 1.