diff --git a/DecouplingKit.podspec b/DecouplingKit.podspec
index c53fda1..5a7124f 100644
--- a/DecouplingKit.podspec
+++ b/DecouplingKit.podspec
@@ -5,6 +5,7 @@ Pod::Spec.new do |s|
   s.version      = "0.0.1"
   s.summary      = "DecouplingKit"
   s.description  = "DecouplingKit"
+  s.license      = "MIT"
 
 
 
diff --git a/DecouplingKit/DKServiceManager.m b/DecouplingKit/DKServiceManager.m
index 03bf5ff..671d744 100644
--- a/DecouplingKit/DKServiceManager.m
+++ b/DecouplingKit/DKServiceManager.m
@@ -50,7 +50,6 @@ - (void)registerLocalServicesWithServiceConfigName:(NSString *)serviceConfigName
 
 
 - (Class)createClass:(Protocol *)service {
-    id implInstance = nil;
     
     if (![self checkValidService:service]) {
         NSLog(@"%@", [NSString stringWithFormat:@"%@ protocol does not been registed", NSStringFromProtocol(service)] );
@@ -71,7 +70,7 @@ - (id)createInstance:(Protocol *)service
     
     Class implClass = [self serviceImplClass:service];
     
-    if ([[implClass class] respondsToSelector:@selector(shareInstance)])
+    if ([[implClass class] respondsToSelector:@selector(sharedInstance)])
         implInstance = [[implClass class] sharedInstance];
     else
         implInstance = [[implClass alloc] init];
diff --git a/Example/Bussiness1/Podfile.lock b/Example/Bussiness1/Podfile.lock
index ddb42b2..47da631 100644
--- a/Example/Bussiness1/Podfile.lock
+++ b/Example/Bussiness1/Podfile.lock
@@ -14,7 +14,7 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   BussinessPublicService: 671cb1e5f60c09eefdf5f28eaee170220068a654
-  DecouplingKit: 4867954e90e0a1c4cd1451db07c8b562ac013236
+  DecouplingKit: b161139761b02057b107f0b4fc8871c11611f947
 
 PODFILE CHECKSUM: bf9066636b339656f63262344b3e56cd02d59837
 
diff --git a/Example/DecouplingKitExample/Podfile.lock b/Example/DecouplingKitExample/Podfile.lock
index 3b5c2b3..ef6e344 100644
--- a/Example/DecouplingKitExample/Podfile.lock
+++ b/Example/DecouplingKitExample/Podfile.lock
@@ -8,7 +8,7 @@ DEPENDENCIES:
   - Bussiness1 (from `../Bussiness1`)
   - Bussiness2 (from `../Bussiness2`)
   - BussinessPublicService (from `../BussinessPublicService`)
-  - DecouplingKit (from `../../DecouplingKit`)
+  - DecouplingKit (from `../../`)
 
 EXTERNAL SOURCES:
   Bussiness1:
@@ -18,14 +18,14 @@ EXTERNAL SOURCES:
   BussinessPublicService:
     :path: "../BussinessPublicService"
   DecouplingKit:
-    :path: "../../DecouplingKit"
+    :path: "../../"
 
 SPEC CHECKSUMS:
   Bussiness1: 4d47ae41c800e1e13bbb1354614ec89f09e2aeaa
   Bussiness2: fe8f5a1fd93aa68faf471cec830d23e718e85618
   BussinessPublicService: 671cb1e5f60c09eefdf5f28eaee170220068a654
-  DecouplingKit: 4867954e90e0a1c4cd1451db07c8b562ac013236
+  DecouplingKit: b161139761b02057b107f0b4fc8871c11611f947
 
-PODFILE CHECKSUM: b436c05e49297d7d681209771e26b4aea7d0cd7d
+PODFILE CHECKSUM: bf5b0afb9975cc549ba9ca3ec3b582e925c0374c
 
 COCOAPODS: 1.0.1