build: install into bin instead of sbin

Installs into bin instead of sbin per guidelines

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Iff8b72c98d743c45b5f53f0bc61dd68e1af1e173
diff --git a/Makefile.am b/Makefile.am
index 5fe5662..e28a542 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -16,7 +16,7 @@
 	$(GTEST_LIBS) $(OESDK_TESTCASE_FLAGS) $(PTHREAD_LIBS) \
 	$(SDBUSPLUS_LIBS) -lboost_system
 
-sbin_PROGRAMS = mapper mapperx
+bin_PROGRAMS = mapper mapperx
 
 mapper_SOURCES = libmapper/app.c
 mapper_LDFLAGS = $(SYSTEMD_LIBS)