Fixed syntax error in README.rst example
Merge pull request #137 from LuRsT/patch-1

Fixed syntax error in README.rst example (thanks @LuRsT)
Support Solr 4+ individual field updates (closes #129)

Now fields can be updated individually:

     conn.add(docs, fieldUpdates={'myfield1_ss': 'add',
                                  'myfield2_s': 'set',
                                  'myfield3_i': 'inc'})

Thanks to Çağatay Çallı (@faraday) for the patch.