add sonatype repo

Author: bronsa

project.clj

@@ -6,4 +6,6 @@
   :source-paths ["src/main/clojure"]
   :test-paths ["src/test/clojure"]
   :dependencies [[org.clojure/clojure "1.9.0-master-SNAPSHOT"]
-                 [com.datomic/datomic-free "0.9.5327" :scope "provided" :exclusions [joda-time]]])
+                 [com.datomic/datomic-free "0.9.5327" :scope "provided" :exclusions [joda-time]]]
+  :repositories [["sonatype" "http://oss.sonatype.org/content/repositories/releases"]
+                 ["snapshots" "http://oss.sonatype.org/content/repositories/snapshots"]])