Golookup
Golookup is a command line tool that simplifies searching for go packages and their documentation from the command line.
Usage
First set up the package.
go get github.com/aishraj/golookup
In case you're searching for something to do with the term build.
golookup search build
Now lets say that you want to view the documentation of a package
golookup doc github.com/kr/pretty