added v0.4.1 rockspec file

rockspecs/tnt-kafka-0.4.1-1.rockspec

@@ -0,0 +1,31 @@
+package = "tnt-kafka"
+version = "0.4.1-1"
+source = {
+    url = "git://github.com/tarantool/tnt-kafka.git",
+    tag = "v0.4.1",
+}
+description = {
+    summary = "Kafka library for Tarantool",
+    homepage = "https://github.com/tarantool/tnt-kafka",
+    license = "Apache",
+}
+dependencies = {
+    "lua >= 5.1" -- actually tarantool > 1.6
+}
+external_dependencies = {
+    TARANTOOL = {
+        header = 'tarantool/module.h'
+    },
+    RDKAFKA = {
+        header = 'librdkafka/rdkafka.h'
+    }
+}
+build = {
+    type = 'cmake';
+    variables = {
+        CMAKE_BUILD_TYPE="RelWithDebInfo",
+        TARANTOOL_DIR="$(TARANTOOL_DIR)",
+        TARANTOOL_INSTALL_LIBDIR="$(LIBDIR)",
+        TARANTOOL_INSTALL_LUADIR="$(LUADIR)"
+    }
+}