Issue_95 Simplify Build Process

Updated agg source location.
Remove need for hand editing graphviz config file.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>

Issue_95 Simplify Build Process

Updated agg source location.
Remove need for hand editing graphviz config file.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>