title: FMDB : Linker command failed with exit code 1
body: <p>I try to use FMDB Database but I've got an error :</p>
  
  <pre><code>Undefined symbols for architecture i386:
    "_OBJC_CLASS_$_FMDatabase", referenced from:
        objc-class-ref in MainViewAppDelegate.o
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>I've added the src directory except : fmdb.m, libsqlite3.0.dylib to my librairies
  and I've imported "FMDatabase.h" in my Appdelegate.h</p>