* Added lgtv platform to control a LG Smart TV running NetCast 3.0
(LG Smart TV models released in 2012) and NetCast 4.0 (LG Smart TV models released in 2013).
* Update media_player.lgtv.markdown
* Rename media_player.lgtv.markdown to media_player.lg_netcast.markdown
* added description of the include/exclude entities/domains feature for history component.
* o moved configuration examples to the section where the filtering is explained
o improved configuration variables description