title: Using libxls with Objective C
body: <p>I am planning to make an app whose data source is from an excel file.
  So basically the desire outcome would be to make my app data in sync with the excel file.
  I searched and found libxls and this seems to be a solution?</p>
  
  <p>I downloaded the DHlibxls which is for xCode but have no success in running the provided test file.</p>
  
  <p>Whenever I tried running I got the following error:</p>
  
  <blockquote>
    <p>Error validating server certificate for
    'https://libxls.svn.sourceforge.net:443':
    - The certificate is not issued by a trusted authority. Use the fingerprint to validate the certificate manually! Certificate
    information:
     - Hostname: *.svn.sourceforge.net
     - Valid: from Sat, 25 Feb 2012 23:58:41 GMT until Sun, 31 Mar 2013 19:51:44 GMT
     - Issuer: GeoTrust, Inc., US
     - Fingerprint: 0b:11:76:de:db:4c:74:72:cb:01:49:7d:13:70:c2:f1:13:7b:cb:bf (R)eject,
    accept (t)emporarily or accept (p)ermanently? svn: OPTIONS of
    'https://libxls.svn.sourceforge.net/svnroot/libxls/trunk/libxls':
    Server certificate verification failed: issuer is not trusted
    (https://libxls.svn.sourceforge.net) Command /bin/sh failed with exit
    code 1</p>
  </blockquote>
  
  <p>Has anyone run into the same problem?</p>