update pods in example

Author: skywinder

Example/web3swiftExample/Podfile.lock

@@ -2,14 +2,14 @@ PODS:
   - BigInt (3.1.0):
     - SipHash (~> 1.2)
   - CryptoSwift (0.12.0)
-  - PromiseKit (6.4.0):
-    - PromiseKit/CorePromise (= 6.4.0)
-    - PromiseKit/Foundation (= 6.4.0)
-    - PromiseKit/UIKit (= 6.4.0)
-  - PromiseKit/CorePromise (6.4.0)
-  - PromiseKit/Foundation (6.4.0):
+  - PromiseKit (6.4.1):
+    - PromiseKit/CorePromise (= 6.4.1)
+    - PromiseKit/Foundation (= 6.4.1)
+    - PromiseKit/UIKit (= 6.4.1)
+  - PromiseKit/CorePromise (6.4.1)
+  - PromiseKit/Foundation (6.4.1):
     - PromiseKit/CorePromise
-  - PromiseKit/UIKit (6.4.0):
+  - PromiseKit/UIKit (6.4.1):
     - PromiseKit/CorePromise
   - Result (4.0.0)
   - scrypt (2.0):
@@ -41,7 +41,7 @@ SPEC REPOS:
 SPEC CHECKSUMS:
   BigInt: 76b5dfdfa3e2e478d4ffdf161aeede5502e2742f
   CryptoSwift: 1c07ca50843dd48bc54e6ea53d7a4dba3b645716
-  PromiseKit: ae3616f45d7bb9bf4ff1e91abc9b7a8c48a340e0
+  PromiseKit: 4c76a6506638034e3d7bede97b2ff7743f7bd2dc
   Result: 7645bb3f50c2ce726dd0ff2fa7b6f42bbe6c3713
   scrypt: 3fe5b1a3b0976f97cd87488673a8f7c65708cc84
   secp256k1_ios: ac9ef04e761f43c58012b28548afa91493761f17
@@ -50,4 +50,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: 8d61818b8900609b53352708ddba0659befd3536
 
-COCOAPODS: 1.5.3
+COCOAPODS: 1.6.0.beta.1