base dependency added

package.json

@@ -5,6 +5,7 @@
     "synopsis": "The standard preprocessor of Curry",
     "category": [ "Programming", "Analysis" ],
     "dependencies": {
+        "base"          : ">= 1.0.0, < 2.0.0"
         "abstract-curry": ">= 2.0.0",
         "cass-analysis" : ">= 2.0.0",
         "cass"          : ">= 2.0.0",