diff --git a/Example/Pods/Pods.xcodeproj/project.pbxproj b/Example/Pods/Pods.xcodeproj/project.pbxproj
index 6e57316..6de647f 100644
--- a/Example/Pods/Pods.xcodeproj/project.pbxproj
+++ b/Example/Pods/Pods.xcodeproj/project.pbxproj
@@ -595,6 +595,7 @@
 		8A1E45814E2A2397A2C54120 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
+				LastSwiftUpdateCheck = 0700;
 				LastUpgradeCheck = 0640;
 			};
 			buildConfigurationList = EAEFBFC1E6CD5EE912823F1F /* Build configuration list for PBXProject "Pods" */;
diff --git a/NSString-Helper/NSString+Helper.h b/NSString-Helper/NSString+Helper.h
index beb1bec..8fe2c51 100644
--- a/NSString-Helper/NSString+Helper.h
+++ b/NSString-Helper/NSString+Helper.h
@@ -10,6 +10,8 @@
 
 @interface NSString (Helper)
 
-- (BOOL) validateEmail;
+- (BOOL) isValidEmail;
+
+- (BOOL) isNumeric;
 
 @end
diff --git a/NSString-Helper/NSString+Helper.m b/NSString-Helper/NSString+Helper.m
index e501d62..c4d6293 100644
--- a/NSString-Helper/NSString+Helper.m
+++ b/NSString-Helper/NSString+Helper.m
@@ -10,7 +10,7 @@
 
 @implementation NSString (Helper)
 
-- (BOOL) validateEmail
+- (BOOL) isValidEmail
 {
     BOOL stricterFilter = YES;
     NSString *stricterFilterString = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
@@ -20,4 +20,12 @@
     return [emailTest evaluateWithObject:self];
 }
 
+- (BOOL)isNumeric {
+    BOOL isValid = NO;
+    NSCharacterSet *alphaNumbersSet = [NSCharacterSet decimalDigitCharacterSet];
+    NSCharacterSet *stringSet = [NSCharacterSet characterSetWithCharactersInString:self];
+    isValid = [alphaNumbersSet isSupersetOfSet:stringSet];
+    return isValid;
+}
+
 @end
diff --git a/README.md b/README.md
index 8c7f48f..cd08e9d 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,16 @@ NSString-Helper is available through [CocoaPods](http://cocoapods.org). To insta
 it, simply add the following line to your Podfile:
 
 ```ruby
-pod "NSString-Helper"
+pod 'NSString-Helper' , :git => 'https://github.com/giuseppenucifora/NSString-Helper.git'
+```
+##Usage
+
+```ruby
+NSString *str = @"testCode";
+
+NSLog(@"%@",[NSNumber numberWithBool:[str isNumeric]]);
+
+NSLog(@"%@",[NSNumber numberWithBool:[str isValidEmail]]);
 ```
 
 ## Author