Small spelling fix for FuncExtesions
Added support for 'weight' function. boost_factor deprecated in 1.4.0.Beta1
Added 'packages/' to .gitignore
A few more AsString extensions
Added support for 'fields' mapping introduced in 1.0 version

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/_multi_fields.html#_multi_fields
Updated connection tests with the new ES responses
updated package dependencies
fixed tests to conform with ES 1.4
Merge branch 'ES_v1.+' into weight-funct
remove WeightFunction class, since it duplicates FucntionScoreQuery.Weigh.