Configuration: document the node.name option

See https://github.com/elasticsearch/elasticsearch/pull/1345 for the
rationale of visibly documenting this.
Add 'validate' documentation to the API guide
fixed a typo
Update guide/reference/modules/http.textile
fixing typo and improving wording in factor/incremental_factor part
Merge pull request #210 from hc/patch-1

Update guide/reference/modules/http.textile
typo: why => what
fix sample to be more realistic, usually no need to set store to yes and seems to confuse users
numeric-range-filter with of wrong properties.
The documentation on numeric-range-filter have mentions to the properties from_inclusive and to_inclusive.
This properties do not exist the correct are include_lower and include_upper.
fix typo
Merge pull request #204 from corny/patch-1

fixed a typo
Merge pull request #213 from schmurfy/patch-1

typo: why => what
Merge pull request #203 from dakrone/master

Add query validation API documentation
Small formatting fix in validation API doc
Merge pull request #215 from rodrigopalhares/master

numeric-range-filter with wrong properties names.
add that _source need to be enabled to use the update API
Updated the information on "Paramedic" on the clients page
Merge pull request #216 from Paikan/patch-3

add that _source need to be enabled to use the update API
fix typo in tutorial
fix link