Add fan presence application framework

Add class framework for detecting fans by tach

Change-Id: I45295fd6bcd81c62cef36320dfbc4f0da6092557
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/configure.ac b/configure.ac
index ee10e62..26b5cc4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,8 +18,10 @@
 AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])
 
 # Checks for libraries.
-PKG_CHECK_MODULES([SYSTEMD], [libsystemd >= 221], ,
-[AC_MSG_ERROR([The systemd development package is required])])
+PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus], ,
+[AC_MSG_ERROR([The openbmc/sdbusplus package is required])])
+
+# Checks for header files.
 
 # Checks for library functions.
 LT_INIT # Required for systemd linking