Update Ring dependencies

Author: weavejester

.travis.yml

@@ -1,6 +1,6 @@
 language: clojure
 lein: lein2
-script: lein2 with-profile dev:dev,1.4:dev,1.5:dev,1.6 test
+script: lein2 with-profile dev:dev,1.6 test
 jdk:
   - openjdk7
   - openjdk6

project.clj

@@ -3,13 +3,11 @@
   :url "https://github.com/ring-clojure/ring-headers"
   :license {:name "The MIT License"
             :url "http://opensource.org/licenses/MIT"}
-  :dependencies [[org.clojure/clojure "1.3.0"]
-                 [ring/ring-core "1.3.2"]]
+  :dependencies [[org.clojure/clojure "1.5.1"]
+                 [ring/ring-core "1.4.0"]]
   :plugins [[lein-codox "0.9.4"]]
   :codox {:project {:name "Ring-Headers"}
           :output-path "codox"}
   :profiles
-  {:dev {:dependencies [[ring/ring-mock "0.2.0"]]}
-   :1.4 {:dependencies [[org.clojure/clojure "1.4.0"]]}
-   :1.5 {:dependencies [[org.clojure/clojure "1.5.1"]]}
+  {:dev {:dependencies [[ring/ring-mock "0.3.0"]]}
    :1.6 {:dependencies [[org.clojure/clojure "1.6.0"]]}})