windows下查看配置模板代码不完整

datax.py脚本中变量readerTemplatePath和writerTemplatePath写死成linux格式的地址间隔符，windows下运行会报错。建议修改：

readerTemplatePath = "%s/plugin/reader/%s/plugin_job_template.json" % (DATAX_HOME,reader)
writerTemplatePath = "%s/plugin/writer/%s/plugin_job_template.json" % (DATAX_HOME,writer)
if isWindows():
readerTemplatePath = "%s\\plugin\\reader\\%s\\plugin_job_template.json" % (DATAX_HOME,reader)
writerTemplatePath = "%s\\plugin\\writer\\%s\\plugin_job_template.json" % (DATAX_HOME,writer)
print "run in windows or linux"

Start in datax.py and inspect how readerTemplatePath and writerTemplatePath are assembled from DATAX_HOME, reader, and writer. Reproduce the template lookup on Windows and verify that the configuration template can be viewed successfully without path-separator errors.

Written by the indexing model from the issue text.