Merge pull request #1 from tmatth/autotools_fix

autotools: give "foreign" option to automake

autogen.sh

-test -f AUTHORS || touch AUTHORS
-test -f ChangeLog || touch ChangeLog
-test -f NEWS || touch NEWS
-test -f README || cp -f README.md README
 autoreconf --install --verbose -Wall

configure.ac

 AC_INIT(dhtcpp, 0.1)
 AC_CONFIG_AUX_DIR(ac)
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([foreign])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR([m4])