Use more readable Array.every method instead of reduce

lib/contracts/contributor.js

@@ -49,9 +49,10 @@ class Contributor extends Base {
       return contributors[method]((contributor) => {
         if (!contributor.accounts) { return false; }
         return contributor.accounts.find((account) => {
-          return searchEntries.reduce((accumulator, searchValue) => {
-            return accumulator && account[searchValue[0]] === searchValue[1];
-          }, true);
+          return searchEntries.every((item) => {
+            let [ key, value ] = item;
+            return account[key] === value;
+          });
         });
       });
     });