commit on the correct branch. review for the startup sequence
reviewd the startup sequence.
started the shutdown sequence
reviewed the shutdown
Merge pull request #2 from the4thdoctor/pg_book_01

Pg book 01
started reviewing the processes
reviewed the processes
Merge branch 'master' of https://github.com/the4thdoctor/pgdba_books into pg_book_01
reviewed the shared buffer
reviewed the work memory
added the xcolor package
reviewed the maintenance work memory and temporary memory
xcolor change
Merge branch 'pg_book_01' of https://github.com/the4thdoctor/pgdba_books into pg_book_01
Merge pull request #3 from the4thdoctor/pg_book_01

Pg book 01
reviewed the base directory. changed the preface and thanks sections
to chapters
reviewed global and pg_xlog
reviewed up to pg_snapshot
completed the management's review
Merge pull request #4 from the4thdoctor/pg_book_01

Pg book 01
started reviewing the logical layout. completed the chapter's preamble
and the first connection's part
completed the connection's review