Enhancements to Revel command

Reformat of code
Allow user to use a mix of command line arguments and flags
Enhance the import tool to detect missing packages in the modules side
Added test cases for all commands

utils/command.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"go/build"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+// Initialize the command based on the GO environment
+func CmdInit(c *exec.Cmd, basePath string) {
+	c.Dir = basePath
+	// Go 1.8 fails if we do not include the GOROOT
+	c.Env = []string{"GOPATH=" + build.Default.GOPATH, "PATH=" + GetEnv("PATH"), "GOROOT="+ GetEnv("GOROOT")}
+
+}
+
+// Returns an environment variable
+func GetEnv(name string) string {
+	for _, v := range os.Environ() {
+		split := strings.Split(v, "=")
+		if split[0] == name {
+			return strings.Join(split[1:], "")
+		}
+	}
+	return ""
+}