Package : iext-core

iext核心组件包，包括对ext的扩展，以及自定义的帮助类、工具类；

cd ext620
sencha generate package --type code iext-core

修改 package.json 文件为以下内容：

{
    "name": "iext-core",
    "namespace": "",
    "type": "code",
    "creator": "iSoft",
    "summary": "iext core",
    "detailedDescription": "iSoft ext framework core.",
    "version": "1.0.0",
    "compatVersion": "1.0.0",
    "format": "1",
    "output": "${package.dir}/build",
    "local": true,
    "classpath": [
        "${package.dir}/src",
        "${package.dir}/${toolkit.name}/src"
    ],
    "overrides": [
        "${package.dir}/overrides",
        "${package.dir}/${toolkit.name}/overrides"
    ],
    "requires": [
    ]
}