Fix problems in RPM spec file.

Specifically, remove an unneeded dependency on libuuid and fix up
set of doc files to be installed to match reality.

Tested on CentOS 6.

iperf3.spec.in

@@ -11,8 +11,6 @@ BuildRoot:	%(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
 
 %if 0%{?el5}
 BuildRequires:  e2fsprogs-devel
-%else
-BuildRequires: libuuid-devel
 %endif
 
 %description
@@ -45,7 +43,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %files
 %defattr(-,root,root,-)
-%doc AUTHORS INSTALL
+%%doc README.md INSTALL LICENSE RELEASE_NOTES
 %{_mandir}/man1/iperf3.1.gz
 %{_mandir}/man3/libiperf.3.gz
 %{_bindir}/iperf3