update some packages and remove node_modules from repo

app/node_modules/cuint/test/UINT64_negate-test.js

@@ -1,51 +0,0 @@
-var assert = require('assert')
-var UINT64 = require('..').UINT64
-
-describe('negate method', function () {
-
-  describe('0', function () {
-
-    it('should return 0', function (done) {
-      var u = UINT64(0).negate()
-
-      assert.equal( u.toNumber(), 0 )
-      done()
-    })
-
-  })
-
-  describe('1', function () {
-
-    it('should return -1', function (done) {
-      var u = UINT64(1).negate()
-
-      assert.equal( u.toNumber(), -1 )
-      done()
-    })
-
-  })
-
-  describe('low bit', function () {
-
-    it('should return -n', function (done) {
-      var u = UINT64(3).negate()
-
-      assert.equal( u.toNumber(), -3 )
-      done()
-    })
-
-  })
-
-  describe('high bit', function () {
-
-    it('should return -n', function (done) {
-      var n = Math.pow(2, 17)
-      var u = UINT64(n).negate()
-
-      assert.equal( u.toNumber(), -n )
-      done()
-    })
-
-  })
-
-})