README.md in fluent-plugin-sql-1.1.1 vs README.md in fluent-plugin-sql-2.0.0

@@ -3,32 +3,31 @@
 ## Overview
 
 This SQL plugin has two parts:
 
 1. SQL **input** plugin reads records from RDBMSes periodically. An example use case would be getting "diffs" of a table (based on the "updated_at" field).
-2. SQL **output** plugin that writes records into RDBMes. An example use case would be aggregating server/app/sensor logs into RDBMS systems.
+2. SQL **output** plugin that writes records into RDBMSes. An example use case would be aggregating server/app/sensor logs into RDBMS systems.
 
 ## Requirements
 
 | fluent-plugin-sql | fluentd    | ruby   |
 |-------------------|------------|--------|
 | >= 1.0.0          | >= v0.14.4 | >= 2.1 |
 | <  1.0.0          | <  v0.14.0 | >= 1.9 |
 
-NOTE: fluent-plugin-sql v1.0.0 is now RC. We will release stable v1.0.0 soon.
+NOTE: fluent-plugin-sql v2's buffer format is different from v1. If you update the plugin to v2, don't reuse v1's buffer.
 
 ## Installation
 
     $ fluent-gem install fluent-plugin-sql --no-document
-    $ fluent-gem install pg -v 0.21.0 --no-document # for postgresql
+    $ fluent-gem install pg --no-document # for postgresql
 
 You should install actual RDBMS driver gem together. `pg` gem for postgresql adapter or `mysql2` gem for `mysql2` adapter. Other adapters supported by [ActiveRecord](https://github.com/rails/rails/tree/master/activerecord) should work.
 
 We recommend that mysql2 gem is higher than `0.3.12` and pg gem is higher than `0.16.0`.
 
-We must use pg gem 0.21.0 (< 1.0.0) because ActiveRecord 5.0 or later doesn't support Ruby 2.1.
-NOTE: ActiveRecord has supported pg 1.0.0 since ActiveRecord 5.1.5.
+If you use ruby 2.1, use pg gem 0.21.0 (< 1.0.0) because ActiveRecord 5.1.4 or earlier doesn't support Ruby 2.1.
 
 ## Input: How It Works
 
 This plugin runs following SQL periodically:
 
@@ -149,12 +148,14 @@
 * **database** RDBMS database name
 * **adapter** RDBMS driver name. You should install corresponding gem before start (mysql2 gem for mysql2 adapter, pg gem for postgresql adapter, etc.)
 * **username** RDBMS login user name
 * **password** RDBMS login password
 * **socket** RDBMS socket path
+* **pool** A connection pool synchronizes thread access to a limited number of database connections
+* **timeout** RDBMS connection timeout
 * **remove_tag_prefix** remove the given prefix from the events. See "tag_prefix" in "Input: Configuration". (optional)
 
 \<table\> sections:
 
 * **table** RDBM table name
 * **column_mapping**: [Required] Record to table schema mapping. The format is consists of `from:to` or `key` values are separated by `,`. For example, if set 'item_id:id,item_text:data,updated_at' to **column_mapping**, `item_id` field of record is stored into `id` column and `updated_at` field of record is stored into `updated_at` column.
-* **<table pattern>**: the pattern to which the incoming event's tag (after it goes through `remove_tag_prefix`, if given). The patterns should follow the same syntax as [that of <match>](http://docs.fluentd.org/articles/config-file#match-pattern-how-you-control-the-event-flow-inside-fluentd). **Exactly one <table> element must NOT have this parameter so that it becomes the default table to store data**.
+* **\<table pattern\>**: the pattern to which the incoming event's tag (after it goes through `remove_tag_prefix`, if given). The patterns should follow the same syntax as [that of \<match\>](https://docs.fluentd.org/configuration/config-file#how-match-patterns-work). **Exactly one \<table\> element must NOT have this parameter so that it becomes the default table to store data**.