add *DaemonizedServer functions
Initial implementation of daemonized servers in Unix
revert echo.R to undaemonized
fix compilation issues in Windows
Support daemonization on windows

* Follows Rhttpd using a thread to run libuv event loop
* Documentation is updated
* The daemonized echo demo can now be used to check variables in the R session environment are updated
  on the daemonized server
Merge branch 'master' into daemon-unix

Conflicts:
	R/RcppExports.R
	R/httpuv.R
	src/RcppExports.cpp
	src/httpuv.cpp
fix typo after merging rstudio/httpuv
Merge branch 'daemon-unix' into daemon-win
Merge branch 'pr/20'

Daeminizing server on unix platforms

Conflicts:
	DESCRIPTION
Merge remote-tracking branch 'pr/23'

Add daemonization on windows

Conflicts:
	NAMESPACE
Fix warnings
add hack to avoid spurious ubuntu bug
Merge pull request #29 from epiviz/daemonize

add hack to avoid spurious ubuntu bug
Mark startDaemonizedServer as experimental in docs
Merge remote-tracking branch 'origin/daemonize'
Update package metadata