Create mendeley_complete.bib

Full export of my mendeley referencies to `.bib` file, containing :
     grep "^@" mendely.bib | awk  -F"{" '{print $1}' | sort | uniq -c

 865 @article
  11 @book
   3 @incollection
  38 @inproceedings
  16 @misc
   3 @phdthesis
   2 @techreport
   1 @unpublished