Merge pull request #20 from LastSprint/add_static_server

add static file server

Update README.md

Add possibility to match requests by their headers via `requestHeader…

…s` field in mock

fix xrash in case of bad query parameter. When people make query like…

… this /details?{value} then server crashed. Now i fix it by add array kength cheking

fix proxy

fix proxy

fix gzip

add respose proxying

add error marshaling for proxy

add respose proxying