title: problem sending mail from backend file not found iphone
body: <p>i'm trying to use the skpsmtpmessage to send emails from backend. In the README.txt it says: </p>
  
  <p>To use this in your app include the following files in your project:</p>
  
  <p>SKPSMTPMessage.*
  NSStream+SKPSMTPExtensions.*</p>
  
  <p>That should mean that i have to include the .h .m files in my project. Now, after i've done that i get an error NSData+Base64Additions.h not found, so i imported the missing classes for this 'skpsmtpmessage' project but i get tons of errors like: </p>
  
  <pre><code>Undefined symbols for architecture armv6:
    "_kCFStreamSSLLevel", referenced from:
        -[SKPSMTPMessage parseBuffer] in SKPSMTPMessage.o
  </code></pre>
  
  <p>i get the same errors if i even remove the import lines. I cleaned the project but it doesn't help at all.</p>
  
  <p>Has anyone used this library before? Have you experienced this errors before? I need some guide. </p>
  
  <p>Thanks in advance!</p>