update manifest to include nsi installer script, tweak to support auto-stealth build

diff --git a/MANIFEST.in b/MANIFEST.in
index e4c10e6..c125a98 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,9 +2,11 @@ include *.txt
 include *.TXT
 include *.py
 include *.pyw
-include pykeylogger.ini
-include pykeylogger.val
-exclude test*.py
+include *.ini
+include *.val
 include MANIFEST
 include MANIFEST.in
-include pykeyloggericon*
\ No newline at end of file
+include *.gif
+include *.svg
+include *.ico
+include *.nsi
\ No newline at end of file