Update the list of files to ignore.

.gitignore

@@ -1,33 +1,37 @@
-.deps
-.libs
-aclocal.m4
-autom4te.cache
-config.guess
-config.h
-config.log
-config.status
-config.sub
-configure
-depcomp
-install-sh
-json.pc
-libtool
-ltmain.sh
-Makefile
-Makefile.in
-missing
-stamp-h1
-stamp-h2
-test1
-test2
-test4
-testSubDir
-test_parse_int64
-test_parse
-test_cast
-test_null
-Debug
-Release
+.deps/
+.libs/
+/aclocal.m4
+/autom4te.cache
+/config.guess
+/json_config.h
+/config.h
+/config.log
+/config.status
+/config.sub
+/configure
+/depcomp
+/install-sh
+/json.pc
+/libtool
+/ltmain.sh
+/Makefile
+/Makefile.in
+/missing
+/stamp-h1
+/stamp-h2
+/tests/Makefile
+/tests/Makefile.in
+/tests/test1
+/tests/test2
+/tests/test4
+/tests/testSubDir
+/tests/test_parse_int64
+/tests/test_parse
+/tests/test_cast
+/tests/test_null
+/tests/test_printbuf
+/Debug
+/Release
 *.lo
 *.o
-libjson.la
+/libjson.la