Add package nksip to the index

index/nksip.mk

@@ -0,0 +1,7 @@
+PACKAGES += nksip
+pkg_nksip_name = nksip
+pkg_nksip_description = Erlang SIP application server
+pkg_nksip_homepage = https://github.com/kalta/nksip
+pkg_nksip_fetch = git
+pkg_nksip_repo = https://github.com/kalta/nksip
+pkg_nksip_commit = master