Add package syn to the index

index/syn.mk

@@ -0,0 +1,7 @@
+PACKAGES += syn
+pkg_syn_name = syn
+pkg_syn_description = A global process registry for Erlang.
+pkg_syn_homepage = https://github.com/ostinelli/syn
+pkg_syn_fetch = git
+pkg_syn_repo = https://github.com/ostinelli/syn
+pkg_syn_commit = master