Merge pull request #142 from lukechampine/scripting

Scripting/bootstrap improvements
add updateWeight function to the wallet tree, for script resizing and sector allocation
this commit should not exist
cleanup bootstrap output
Merge pull request #143 from DavidVorick/files

Clean Up
move bootstrap scripts to script/scripts.go
check for nil values before executing scripts
update bootstrapping process
fix initial wallet balance
david can't into subtraction
fix encoding offset