remove dependency from opencollective package

created own postinstall task

Author: amitguptagwl

Diff for: .bithoundrc

@@ -1,6 +1,7 @@
 {
   "ignore": [
     "lib/**",
-    "static/**"
+    "static/**",
+    "tasks"
     ]
 }

Diff for: .codeclimate.yml

@@ -23,3 +23,4 @@ ratings:
 exclude_paths:
   - spec/
   - lib/**/*
+  - tasks/