Error in re-building vignettes:
  ...
pandoc.exe: Could not fetch https://raw.githubusercontent.com/christianparobek/skeleSim/master/vignettes/Choosermetasim2.png
StatusCodeException (Status {statusCode = 503, statusMessage = "Backend.max_conn reached"}) [("Server","Varnish"),("Retry-After","0"),("Content-Type","text/html; charset=utf-8"),("Content-Length","466"),("Accept-Ranges","bytes"),("Date","Fri, 13 Jan 2017 16:36:31 GMT"),("Via","1.1 varnish"),("Connection","close"),("X-Served-By","cache-hhn1540-HHN"),("X-Cache","MISS"),("X-Cache-Hits","0"),("X-Timer","S1484325391.172392,VS0,VE0"),("Access-Control-Allow-Origin","*"),("X-Fastly-Request-ID","8465829c1789f55fb01ae4bae0603cd524dedee3"),("Expires","Fri, 13 Jan 2017 16:41:31 GMT"),("Vary","Authorization,Accept-Encoding"),("X-Response-Body-Start","\n<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"\n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html>\n  <head>\n    <title>503 Backend.max_conn reached</title>\n  </head>\n  <body>\n    <h1>Error 503 Backend.max_conn reached</h1>\n    <p>Backend.max_conn reached</p>\n    <h3>Guru Mediation:</h3>\n    <p>Details: cache-hhn1540-HHN 1484325391 2166652491</p>\n    <hr>\n    <p>Varnish cache server</p>\n  </body>\n</html>\n"),("X-Request-URL","GET https://raw.githubusercontent.com:443/christianparobek/skeleSim/master/vignettes/Choosermetasim2.png")] (CJ {expose = []})
Warning: running command '"D:/compiler/pandoc/pandoc" +RTS -K512m -RTS Forecasting.utf8.md --to html --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output Forecasting.html --smart --email-obfuscation none --self-contained --standalone --section-divs --template "d:\RCompile\CRANpkg\lib\3.2\rmarkdown\rmd\h\default.html" --highlight-style pygments --css "d:\RCompile\CRANpkg\lib\3.2\rmarkdown\rmarkdown\templates\html_vignette\resources\vignette.css" --mathjax --variable "mathjax-url:https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"' had status 67
Error: processing vignette 'Forecasting.Rmd' failed with diagnostics:
pandoc document conversion failed with error 67
Execution halted