Add .gitignore

.gitignore

+Makefile
+config.log
+config.status
+Doxyfile
+bistest
+config.h
+examples/test_osm1
+examples/test_osm2
+examples/test_osm3
+libtool
+readosm.pc
+stamp-h1
+*.out
+*~
+*.o
+*.lo
+*.a
+*.la
+.deps
+.libs