Improved documentation for nodes stats
Updated docs on fielddata cache
Added index.fielddata.cache.expire
Adding a small paragraph about dividing real integers using MVEL
Merge pull request #385 from spinscale/clear-parameter

Improved documentation for cluster nodes stats
Merge pull request #404 from spinscale/scripting-integer-arithmetic

Adding a small paragraph about dividing real integers using MVEL
Nodes Info API: add plugin option
Relative to https://github.com/elasticsearch/elasticsearch/issues/2668
Fix Pattern documentation when using \\
add note that mlockall is only available on linux / unix