trying PURGE for the codecov badge

gistfile1.txt

$ curl -vvX PURGE https://codecov.io/github/Yelp/venv-update/coverage.svg?branch=development
* About to connect() to codecov.io port 443 (#0)
*   Trying 54.225.168.88... connected
* Connected to codecov.io (54.225.168.88) port 443 (#0)
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS handshake, Server finished (14):
* SSLv3, TLS handshake, Client key exchange (16):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSL connection using AES128-SHA
* Server certificate:
*        subject: OU=Domain Control Validated; OU=EssentialSSL; CN=codecov.io
*        start date: 2015-08-02 00:00:00 GMT
*        expire date: 2016-08-31 23:59:59 GMT
*        subjectAltName: codecov.io matched
*        issuer: C=GB; ST=Greater Manchester; L=Salford; O=COMODO CA Limited; CN=COMODO RSA Domain Validation Secure Server CA
*        SSL certificate verify ok.
> PURGE /github/Yelp/venv-update/coverage.svg?branch=development HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: codecov.io
> Accept: */*
> 
< HTTP/1.1 405 Method Not Allowed
< Connection: keep-alive
< Date: Wed, 02 Mar 2016 22:04:51 GMT
< Content-Type: text/html; charset=UTF-8
< Content-Length: 0
< Server: TornadoServer/4.2.1
< X-Request-Id: 5141c990-c1a1-4e99-821c-28d52304d5c9
< Vary: Accept-Encoding
< Via: 1.1 vegur
< 
* Connection #0 to host codecov.io left intact
* Closing connection #0
* SSLv3, TLS alert, Client hello (1):