Adds cocoapods for libraries.

Adds OCMockito and OCHamcrest libs.

Pods/OCHamcrest/Source/Library/Collection/HCIsDictionaryContainingKey.m

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+//  OCHamcrest by Jon Reid, https://qualitycoding.org/
+//  Copyright 2019 hamcrest.org. See LICENSE.txt
+
+#import "HCIsDictionaryContainingKey.h"
+
+#import "HCRequireNonNilObject.h"
+#import "HCWrapInMatcher.h"
+
+
+@interface HCIsDictionaryContainingKey ()
+@property (nonatomic, strong, readonly) id <HCMatcher> keyMatcher;
+@end
+
+@implementation HCIsDictionaryContainingKey
+
+- (instancetype)initWithKeyMatcher:(id <HCMatcher>)keyMatcher
+{
+    self = [super init];
+    if (self)
+        _keyMatcher = keyMatcher;
+    return self;
+}
+
+- (BOOL)matches:(id)dict
+{
+    if ([dict isKindOfClass:[NSDictionary class]])
+        for (id oneKey in dict)
+            if ([self.keyMatcher matches:oneKey])
+                return YES;
+    return NO;
+}
+
+- (void)describeTo:(id <HCDescription>)description
+{
+    [[description appendText:@"a dictionary containing key "]
+                  appendDescriptionOf:self.keyMatcher];
+}
+
+@end
+
+
+id HC_hasKey(id keyMatcher)
+{
+    HCRequireNonNilObject(keyMatcher);
+    return [[HCIsDictionaryContainingKey alloc] initWithKeyMatcher:HCWrapInMatcher(keyMatcher)];
+}