use packages dir instead of requirements

gui/kivy/Readme.txt

@@ -1,3 +1,5 @@
+Before compiling, create packages: `contrib/make_packages`
+
 Commands::
 
     `make theming` to make a atlas out of a list of pngs

gui/kivy/tools/blacklist.txt

@@ -29,7 +29,7 @@ gui/android*
 gui/gtk*
 gui/qt*
 gui/kivy/tools
-
+build/*
 
 # unused kivy files (platform specific)
 kivy/input/providers/wm_*

gui/kivy/tools/buildozer.spec

@@ -32,7 +32,7 @@ version.filename = %(source.dir)s/lib/version.py
 #version = 1.9.8
 
 # (list) Application requirements
-requirements = requests, dnspython, openssl, pil, qrcode, ecdsa, pbkdf2, plyer==master, kivy==master
+requirements = openssl, pil, plyer==master, kivy==master
 
 # (str) Presplash of the application
 presplash.filename = %(source.dir)s/gui/kivy/theming/splash.png