add git ignores

Signed-off-by: Nathan Hjelm <hjelmn@me.com>

.gitignore

@@ -0,0 +1,33 @@
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+config.guess
+config.h
+config.log
+config.status
+config.sub
+configure
+.deps
+.libs
+*.o
+*.lo
+*.la
+*.orig
+*.rej
+*.bz2
+*.gz
+*~
+libusb-config
+libusb.pc
+missing
+stamp-h1
+ltmain.sh
+m4
+install-sh
+compile
+depcomp
+examples/lsusb
+examples/testlibusb
+config.h.in
+libtool