clean(test): move smoke testing to fixture

package.json

@@ -40,7 +40,7 @@
     "testdev": "cross-env LC_ALL=C WECHATY_LOG=silly ava --ext ts --serial --verbose --fail-fast --timeout=2m",
     "testdist": "cross-env WECHATY_LOG=SILLY WECHATY_HEAD=chrome ava --ext ts --verbose --fail-fast --timeout=2m",
     "test:pack": "npm run dist && rm -fr package wechaty-*.*.*.tgz && npm pack --verbose  && tar zxvf wechaty-*.*.*.tgz",
-    "test:npm": "export TMPDIR=/tmp/wechaty.$$ && npm pack && mkdir $TMPDIR && mv wechaty-*.*.*.tgz $TMPDIR && cp example/smoke-testing.js $TMPDIR && cd $TMPDIR && npm init -y && npm i wechaty-*.*.*.tgz && node smoke-testing.js",
+    "test:npm": "export TMPDIR=/tmp/wechaty.$$ && npm pack && mkdir $TMPDIR && mv wechaty-*.*.*.tgz $TMPDIR && cp test/fixture/smoke-testing.js $TMPDIR && cd $TMPDIR && npm init -y && npm i wechaty-*.*.*.tgz && node smoke-testing.js",
     "io-client": "ts-node bin/io-client",
     "dev": "ts-node dev.ts",
     "demo": "ts-node example/ding-dong-bot.ts",