Add NewCpu()

.travis.yml

@@ -0,0 +1,9 @@
+language: go
+
+go:
+  - 1.3
+  - tip
+
+matrix:
+  allow_failures:
+    - go: tip

cpu.go

@@ -0,0 +1,8 @@
+package i6502
+
+type Cpu struct {
+}
+
+func NewCpu() (*Cpu, error) {
+	return &Cpu{}, nil
+}

cpu_test.go

@@ -0,0 +1,17 @@
+package i6502
+
+import (
+	"testing"
+)
+
+func TestNewCpu(t *testing.T) {
+	cpu, err := NewCpu()
+
+	if err != nil {
+		t.Errorf("Expected NewCPU() to not raise an error")
+	}
+
+	if cpu == nil {
+		t.Errorf("Expected NewCPU() to create a new CPU instance")
+	}
+}