kpod create and run

Add the ability to run create a container with kpod.  Also, be able to run
(create and start) a container.  If the user asks for -it, be able to
attach a terminal to the container.

Signed-off-by: baude <bbaude@redhat.com>

libpod/util.go

@@ -0,0 +1,34 @@
+package libpod
+
+import (
+	"os"
+	"path/filepath"
+)
+
+// WriteFile writes a provided string to a provided path
+func WriteFile(content string, path string) error {
+	baseDir := filepath.Dir(path)
+	if baseDir != "" {
+		if _, err := os.Stat(path); err != nil {
+			return err
+		}
+	}
+	f, err := os.Create(path)
+	defer f.Close()
+	if err != nil {
+		return err
+	}
+	f.WriteString(content)
+	f.Sync()
+	return nil
+}
+
+// StringInSlice determines if a string is in a string slice, returns bool
+func StringInSlice(s string, sl []string) bool {
+	for _, i := range sl {
+		if i == s {
+			return true
+		}
+	}
+	return false
+}