Remove rockspec, add opm dist.ini

Author: hamishforbes

dist.ini

@@ -0,0 +1,13 @@
+name=ledge
+abstract=An RFC compliant and ESI capable HTTP cache for Nginx / OpenResty, backed by Redis
+author=James Hurst, Hamish Forbes
+is_original=yes
+license=2bsd
+lib_dir=lib
+repo_link=https://github.com/pintsized/ledge
+main_module=lib/ledge.lua
+requires = pintsized/lua-resty-http >= 0.11,
+    pintsized/lua-resty-redis-connector >= 0.06,
+    pintsized/lua-resty-qless >= 0.11,
+    p0pr0ck5/lua-resty-cookie >= 0.01,
+    hamishforbes/lua-ffi-zlib >= 0.3.0