fix opam file

Author: hhugo

opam

@@ -1,9 +1,9 @@
 opam-version: "1.2"
-maintainer: "[email protected]"
+maintainer:   "[email protected]"
 authors:      "Ocsigen team"
 bug-reports:  "https://github.com/ocsigen/js_of_ocaml/issues"
-homepage: "http://ocsigen.org/js_of_ocaml"
-dev-repo: "https://github.com/ocsigen/js_of_ocaml.git"
+homepage:     "http://ocsigen.org/js_of_ocaml"
+dev-repo:     "https://github.com/ocsigen/js_of_ocaml.git"
 
 version: "dev"
 
@@ -20,14 +20,14 @@ depends: [
   "cppo"
   "camlp4"
   "base64" {>= "2.0.0"}
-  ( "base-no-ppx" | "ppx_tools" )
+  ("base-no-ppx" | "ppx_tools")
   "ocamlbuild"
 ]
 depopts: ["deriving" "ppx_deriving" "tyxml" "reactiveData" ]
 conflicts: [
-  "deriving" {< "0.6"}
-  "tyxml"    {< "3.6.0"}
+  "deriving"     {< "0.6"}
+  "tyxml"        {< "3.6.0"}
   "ppx_deriving" {< "3.0"}
-  "reactiveData" {< "2.0"}
+  "reactiveData" {< "0.2"}
 ]
 available: [ ocaml-version >= "4.00.0" ]