SCHEMA-785. Make TableLayoutMonitor explicitly reference counted

issue: https://jira.kiji.org/browse/SCHEMA-785
review: https://review.kiji.org/r/1873
SCHEMA-798. Delete Tool should not open an instance while deleting it

issue: https://jira.kiji.org/browse/SCHEMA-798
review: https://review.kiji.org/r/1889
initial async commit
SCHEMA-788 Create Dummy AsyncHBase for all Kiji* Interfaces

Created a dummy outline for asynchbase. Removed any references or import statements that involved hadoop.hbase.client.* (except for HBaseAdmin) and subsequent HTable methods and variables. Commented out and added "TODO"s as necessary.

issue: htpps://jira.kiji.org/browse/SCHEMA-788
Updated by removing unnecessary files such as *ColumName*.java, everything in layout/, *Page*.java, corresponding test classes, and other unnecessary directories.
Update README.md

Added warning at top of README.md
Update README.md
Removed some more files and updated files as requested in the pull request comments.
Merge branch 'asyncDummy' of github.com:GabeBenjamin/kiji-schema into asyncDummy
Merge pull request #200 from GabeBenjamin/asyncDummy

SCHEMA-788 Create Dummy AsyncHBase for all Kiji* Interfaces
SCHEMA-789. Implement KijiTableWriter Interface w/ AsyncHBase

Rewrote functions in AsyncKijiTableWriter using AsyncHBase instead of HTable to make an AsyncHBase version of HBaseKijiTableWriter.

issue: https://jira.kiji.org/browse/SCHEMA-789