hzambran/RFmerge: v0.1-3

-) new argument 'write2disk' to allow the user to choose wheter the output merged layers should be written to disk or not.

-) 'RFmerge.R': new argument 'write2disk' to allow the user to choose whether the output merged layers should be written to disk or not. Default value is 'FALSE'.

-) 'RFmerge.R': 'installed.packages()' was replaced by 'find.package', for increasing efficiency to find out if a named package is installed or not.

-) examples are now run within a 'donttest{}' piece of code instead of a '\dontrun{}' one.

-) a maximum of two cores is used in all examples, even if the number of cores available is much larger than that (required by CRAN)

-) RFmerge.Rd: '\value' tag was added, explaining the returning object of the function

-) Hengl et al. (2018) was added as a reference' did not match any file(s) known to git