draft release v0.5.0 (#73)

diff --git a/CHANGES.md b/CHANGES.md
index 1698bc3..525fe49 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,10 @@
 # Changes
 
+## 0.5.0
+
+1. Provide Kong plugin.
+2. Correct the version format luarock.
+
 ## 0.4.1
 
 1. fix: missing `constants` in the rockspsec.
diff --git a/rockspec/kong-plugins-skywalking-master-0.rockspec b/kong/rockspec/kong-plugin-skywalking-0.5.0-0.rockspec
similarity index 64%
rename from rockspec/kong-plugins-skywalking-master-0.rockspec
rename to kong/rockspec/kong-plugin-skywalking-0.5.0-0.rockspec
index 23535e1..ea7d2ce 100644
--- a/rockspec/kong-plugins-skywalking-master-0.rockspec
+++ b/kong/rockspec/kong-plugin-skywalking-0.5.0-0.rockspec
@@ -1,8 +1,8 @@
-package = "kong-plugins-skywalking"
-version = "master-0"
+package = "kong-plugin-skywalking"
+version = "0.5.0-0"
 source = {
-   url = "git://github.com/dmsolr/skywalking-nginx-lua",
-   branch = "kong",
+   url = "git://github.com/apache/skywalking-nginx-lua",
+   branch = "v0.5.0",
 }
 
 description = {
@@ -12,9 +12,7 @@
 }
 
 dependencies = {
-   "lua-resty-http >= 0.15",
-   "lua-resty-jit-uuid >= 0.0.7",
-   "skywalking-nginx-lua >= master"
+   "skywalking-nginx-lua >= 0.5.0"
 }
 
 build = {
diff --git a/kong/rockspec/kong-plugin-skywalking-master-0.rockspec b/kong/rockspec/kong-plugin-skywalking-master-0.rockspec
index 1e9cadb..d5f3661 100644
--- a/kong/rockspec/kong-plugin-skywalking-master-0.rockspec
+++ b/kong/rockspec/kong-plugin-skywalking-master-0.rockspec
@@ -2,7 +2,7 @@
 version = "master-0"
 source = {
    url = "git://github.com/apache/skywalking-nginx-lua",
-   branch = "kong",
+   branch = "master",
 }
 
 description = {
diff --git a/rockspec/skywalking-nginx-lua-0.5.0-0.rockspec b/rockspec/skywalking-nginx-lua-0.5.0-0.rockspec
new file mode 100644
index 0000000..a30d8ad
--- /dev/null
+++ b/rockspec/skywalking-nginx-lua-0.5.0-0.rockspec
@@ -0,0 +1,34 @@
+package = "skywalking-nginx-lua"
+version = "0.5.0-0"
+source = {
+   url = "git://github.com/apache/skywalking-nginx-lua",
+   branch = "v0.5.0",
+}
+
+description = {
+   summary = "The Nginx Lua agent for Apache SkyWalking",
+   homepage = "https://github.com/apache/skywalking-nginx-lua",
+   license = "Apache License 2.0"
+}
+
+dependencies = {
+   "lua-resty-http >= 0.15",
+   "lua-resty-jit-uuid >= 0.0.7"
+}
+
+build = {
+   type = "builtin",
+   modules = {
+      ["skywalking.client"] = "lib/skywalking/client.lua",
+      ["skywalking.constants"] = "lib/skywalking/constants.lua",
+      ["skywalking.correlation_context"] = "lib/skywalking/correlation_context.lua",
+      ["skywalking.management"] = "lib/skywalking/management.lua",
+      ["skywalking.segment_ref"] = "lib/skywalking/segment_ref.lua",
+      ["skywalking.segment"] = "lib/skywalking/segment.lua",
+      ["skywalking.span_layer"] = "lib/skywalking/span_layer.lua",
+      ["skywalking.span"] = "lib/skywalking/span.lua",
+      ["skywalking.tracer"] = "lib/skywalking/tracer.lua",
+      ["skywalking.tracing_context"] = "lib/skywalking/tracing_context.lua",
+      ["skywalking.util"] = "lib/skywalking/util.lua",
+   }
+}