fix the go runner to support chdir.

go/detect/detect.go

@@ -24,7 +24,7 @@ var ProjectTypes = []*Project{
	&Project{"docker/fig", Commands{"run": "fig up"}, dockerFig},
	&Project{"docker/default", Commands{}, dockerDefault},
	&Project{"executable", Commands{"run": "{file}"}, executableDefault},
	&Project{"go/default", Commands{"build": "go build {file}", "run": "go build {file} && $(basename {file} .go)"},
	&Project{"go/default", Commands{"build": "go build {file}", "run": "go build $(basename {file}) && ./$(basename {file} .go)"},
		goDefault},
	&Project{"java/maven", Commands{"build": "mvn compile", "test": "mvn compile test"}, javaMaven},
	&Project{"javascript/npm", Commands{}, javascriptNpm},