Adds cocoapods for libraries.

Adds OCMockito and OCHamcrest libs.

Pods/OCHamcrest/Source/Library/Text/HCSubstringMatcher.m

@@ -0,0 +1,34 @@
+//  OCHamcrest by Jon Reid, https://qualitycoding.org/
+//  Copyright 2019 hamcrest.org. See LICENSE.txt
+
+#import "HCSubstringMatcher.h"
+
+#import "HCRequireNonNilObject.h"
+
+
+@interface HCSubstringMatcher (SubclassResponsibility)
+- (NSString *)relationship;
+@end
+
+
+@implementation HCSubstringMatcher
+
+- (instancetype)initWithSubstring:(NSString *)substring
+{
+    HCRequireNonNilObject(substring);
+
+    self = [super init];
+    if (self)
+        _substring = [substring copy];
+    return self;
+}
+
+- (void)describeTo:(id <HCDescription>)description
+{
+    [[[[description appendText:@"a string "]
+                    appendText:[self relationship]]
+                    appendText:@" "]
+                    appendDescriptionOf:self.substring];
+}
+
+@end