took out total time v_days

this query get's all of the data in v$active_session_history
in bars, calc AAS first, then mult by v_bars
renames ash_graph_ash.sql to ash_graph_waits.sql
modified readme with ash_graph file renames
hello RMOUG
updated blog URL
added Tanel Poder's scripts ash_wait_chains.sql
add link to Tanel's blog for ash_wait_chains
added Tanel Poders URL to Readme

http://blog.tanelpoder.com/files/scripts/ash/
Merge pull request #1 from khailey/master

Update