Xcode: Dependency added via Pods is not found, get Undefined Symbol

My Podfile is

platform :ios, '7.0'
pod 'REFrostedViewController', '~> 2.4.7'
pod 'AFNetworking', '~> 2.4'
pod 'SWTableViewCell', '~> 0.3.6'

In my TransactionViewController, I do following in

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    // make last cell visible: http://ift.tt/1nzkMAb
    tableView.contentInset = UIEdgeInsetsMake(0, 0, 120, 0);
    [tableView registerNib:[UINib nibWithNibName:@"TransactionCell" bundle:nil] forCellReuseIdentifier:CellIdentifier];

    TransactionCell *transactionCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    if (transactionCell == nil) {
        transactionCell = [[TransactionCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
    }

    transactionCell.rightUtilityButtons = self.rightButtonActions;
...
}

and

- (NSArray *)rightButtonActions {
    NSMutableArray *rightUtilityButtons = [NSMutableArray new];
    [rightUtilityButtons sw_addUtilityButtonWithColor:
                    [UIColor colorWithRed:0.78f green:0.78f blue:0.8f alpha:1.0]
                                                title:@"More"];
    [rightUtilityButtons sw_addUtilityButtonWithColor:
                    [UIColor colorWithRed:1.0f green:0.231f blue:0.188 alpha:1.0f]
                                                title:@"Delete"];

    return rightUtilityButtons;
}

This is from example from github

when I run my application, Xcode fails with following error

ld: warning: directory not found for option '-L/Users/harith/code/XcodeProjects/pennyapp-ios/Pods/build/Debug-iphoneos'
Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_SWTableViewCell", referenced from:
      _OBJC_CLASS_$_TransactionCell in TransactionCell.o
  "_OBJC_METACLASS_$_SWTableViewCell", referenced from:
      _OBJC_METACLASS_$_TransactionCell in TransactionCell.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I am new to iOS programming and not sure how to resolve this.

I do see however, that for my other two dependencies in Podfile, I have corresponding *.a file in framework, but not for SWTableViewCell, what's the issue?