fixed typo
Updated hunspell documentation with new 0.90.3 features
Correcting camelcase to snake case
Added documentation about pattern replace char filter
Added docs for pattern_capture token filter

Closes #475
Updated suggest documentation to incorporate completion suggestions

In order to have useful documentation, the suggest documentation is now
split into three pieces, one for each suggester.
s/maxMergeDocs/max_merge_docs
Updating ec2 docs to check for current version
added missing offsets index_options
Added explaination to edge ngram tokenizer how to replce the '"side" : 'BACK'" option
Clarify documentation for FastVectoryHighlighter.
Fix 404 Link
Merge pull request #496 from armetiz/patch-2

Fix 404 Link
Added missing parenthesis
Added note about default search type
Fix small typo
Create CONTRIBUTING.md
Update cluster update settings and indices update settings APIs