update memory recommendation, closes #110 (#147)

* add unit test to mem recs

Co-authored-by: Hervé Pagès <[email protected]>

Author: LiNk-NY

general-package-development.Rmd

@@ -54,7 +54,9 @@ Experiment Data, Annotation, and Workflow packages are allowed additional space
 
 ### Memory {#memory}
 
-Vignette and man page examples should not use more than 3 GB of memory since <i class="fab fa-r-project"></i> cannot allocate more than this on 32-bit Windows.
+Due to hardware limitations on the Bioconductor Build System (BBS), it is
+recommended that the vignettes, man page examples, and unit tests do not require
+more than 8 GB of memory to run. 
 
 ### Individual file size {#individual-file-size}