Refactoring tests

Tests are now moved in the source folder.
Simplified travis-ci script.
Added some examples (that are checked for build, but not executed)

example_test.go

@@ -0,0 +1,89 @@
+//
+// Copyright 2015 Cristian Maglie. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+
+package serial_test
+
+import "fmt"
+import "log"
+import "go.bug.st/serial"
+
+func ExampleGetPortsList() {
+	ports, err := serial.GetPortsList()
+	if err != nil {
+		log.Fatal(err)
+	}
+	if len(ports) == 0 {
+		fmt.Println("No serial ports found!")
+	} else {
+		for _, port := range ports {
+			fmt.Printf("Found port: %v\n", port)
+		}
+	}
+}
+
+func ExampleSetMode() {
+	port, err := serial.OpenPort("/dev/ttyACM0", &serial.Mode{})
+	if err != nil {
+		log.Fatal(err)
+	}
+	mode := &serial.Mode{
+		BaudRate: 9600,
+		Parity:   serial.PARITY_NONE,
+		DataBits: 8,
+		StopBits: serial.STOPBITS_ONE,
+	}
+	if err := port.SetMode(mode); err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("Port set to 9600 N81")
+}
+
+func ExampleFullCommunication() {
+	ports, err := serial.GetPortsList()
+	if err != nil {
+		log.Fatal(err)
+	}
+	if len(ports) == 0 {
+		log.Fatal("No serial ports found!")
+	}
+
+	for _, port := range ports {
+		fmt.Printf("Found port: %v\n", port)
+	}
+
+	mode := &serial.Mode{
+		BaudRate: 9600,
+		Parity:   serial.PARITY_NONE,
+		DataBits: 8,
+		StopBits: serial.STOPBITS_ONE,
+	}
+	port, err := serial.OpenPort(ports[0], mode)
+	if err != nil {
+		log.Fatal(err)
+	}
+	n, err := port.Write([]byte("10,20,30\n\r"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("Sent %v bytes\n", n)
+
+	buff := make([]byte, 100)
+	for {
+		// Reads up to 100 bytes
+		n, err := port.Read(buff)
+		if err != nil {
+			log.Fatal(err)
+			break
+		}
+		if n == 0 {
+			fmt.Println("\nEOF")
+			break
+		}
+		fmt.Printf("%v", string(buff[:n]))
+	}
+}
+
+// vi:ts=2