Merge pull request #15 from borishejblum/master

Updating pkgDNLs_worldmapcolor
Bump version to 0.14.5
Added copyrights to all .r files.
install.URL - made sure to exit the function if it could not download the file
install.git - works again. The guys there moved git from googlecode to github.
Added the file kill_pid.r

With the new functions:
   * get_pid - get the process id by its name
   * kill_pid - kills the process of all the scripts with some pid
   * kill_process - kills process with some name
   * get_tasklist - returns a data.frame with the current running processes. Windows only.
   * get_Rscript_PID - returns all of the process IDs (i.e.: PID) of the Rscript.exe that are running. Windows only.
   * kill_all_Rscript_s - kills the process of all the Rscript.exe that are running (you can schedule how long it should wait before doing it). Windows only.
version bump to 0.15.1
install.pandoc - fixed and now works again.
Fixes to doc in kill_all_Rscript_s and uninstall.packages.
Bump version to 0.15.3
Changed the menu item to be "installr" instead of "Update" (in both zzz.r and startup.r)
rename_r_to_R -  A NEW FUNCTIONS for Renaming files' extensions in a folder from .r to .R.
roxygen2 from 4.0.0 to  4.0.1
Changed all R script files from .r to .R!
(added a space in each file, so that git will pick up on the change)
Version bump - 0.15.5
Change defaults for subdir. Added parameters recursive and massage. Updated the docs
Exported rename_r_to_R
Start creating "ChangeLog" file, based on my git commits :)
rename .r to .b
rename .b to .R