Merge pull request #15 from dekeract/xcode6_support

Fixed crash if run choosy on xcode 6.

Author: eagsalazar

Diff for: Choosy/Model/ChoosyAppTypeParameter.h

@@ -6,7 +6,7 @@
 @interface ChoosyAppTypeParameter : MTLModel <MTLJSONSerializing>
 
 @property (nonatomic, strong) NSString *name;
-@property (nonatomic, strong) NSString *description;
+@property (nonatomic, strong) NSString *parameterDescription;
 @property (nonatomic, strong) NSString *key;
 @property (nonatomic) BOOL isPresenceRequired;
 @property (nonatomic) BOOL isValueRequired;

Diff for: Choosy/Model/ChoosyAppTypeParameter.m

@@ -11,7 +11,8 @@ - (void)setKey:(NSString *)key
 + (NSDictionary *)JSONKeyPathsByPropertyKey
 {
     return @{ @"isPresenceRequired" : @"presence_required",
-              @"isValueRequired" : @"value_required" };
+              @"isValueRequired" : @"value_required",
+              @"parameterDescription" : @"description"};
 }
 
 @end