Add spell-checker to CLI

[bobbermac]

Support frmx check content spelling

[bobbermac]

First step:

for FILE in `find posts -name content.rfc5322`; 
  do 
  echo
  echo "------------------------------------------------------------"
  echo "Spell-checking file: $FILE"
  echo "------------------------------------------------------------"
  ispell -l -H < $FILE |sort -u
  done