add pin to mime-types for ruby 1.8.7
add pin to mime-types for ruby 1.8.7

chef/ffi-yajl,kou/ffi-yajl,h4ck3rm1k3/ffi-yajl,chef/ffi-yajl,h4ck3rm1k3/ffi-yajl,chef/ffi-yajl,kou/ffi-yajl,h4ck3rm1k3/ffi-yajl,kou/ffi-yajl