add a simple and friendly way to build project with ant

.gitignore

@@ -15,4 +15,7 @@
 /.idea/
 
 /out/
-/binary/.cache/
+/binary/.cache/
+
+.scriptjava/
+libs/

README.md

@@ -86,11 +86,21 @@ Before launching the executable make sure, that there is `javac` in the system P
 
 
 ## Building
-The main project has no dependencies, so it's a straight-forward process. However, building from IDE (when project is created from the source code)
-won't work, as current functionality requires the project's jar in the execution directory (due to build-in imports & IScript)
+The main project has no dependencies, so it's a straight-forward process. 
 
 Tests require `Gson` (for json testing)
 
+build with ant :
+
+```bash
+git clone https://github.com/noties/ScriptJava.git
+cd ScriptJava
+ant install
+java -jar build/jar/ScriptJava.jar
+```
+
+enjoy it~
+
 
 ## License
 

build.xml

@@ -0,0 +1,28 @@
+<project default="jar">
+    <property name="build" location="build"/>
+    <property name="classesdir" location="${build}/classes"/>
+    <property name="jardir" location="${build}/jar"/>
+    <property name="libdir" location="libs"/>
+    <property name="destjar" location="${jardir}/ScriptJava.jar"/>
+
+	<target name="clean">
+        <delete dir="${build}"/>
+        <delete dir="${libdir}"/>
+    </target>  
+    <target name="compile">
+        <mkdir dir="${classesdir}"/>
+        <javac srcdir="src" destdir="${classesdir}"/>
+    </target>
+     <target name="jar" depends="compile" >
+        <mkdir dir="${jardir}"/>
+        <jar destfile="${destjar}" basedir="${classesdir}">
+            <manifest>
+                <attribute name="Main-Class" value="scriptjava.Main"/>
+            </manifest>
+        </jar>
+    </target>
+    <target name="install" depends="jar">
+        <mkdir dir="${libdir}"/>
+        <copy file="${destjar}" todir="${libdir}"/>
+    </target>
+</project>