AndroidManifest.xml has some error

It getting error as

The processing instruction target matching "[xX][mM][lL]" is not allowed. Error in an XML file: aborting build.

I am new to the android development how can I overcome this problem here my AndroidManifest.xm file.

 <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://ift.tt/nIICcg"
      package="com.exa.myapp"
      android:versionCode="1"
      android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <uses-library android:name="android.test.runner" />

    <activity
        android:name="com.exa.myapp.MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.exa.myapp.DisplayMessage"
        android:label="@string/title_activity_display_message" >
    </activity>
</application>

<instrumentation
    android:name="android.test.InstrumentationTestRunner"
    android:label="myApp"
    android:targetPackage="com.exa.myapp" />

 </manifest>