minor, provide terms(1) tool to extract terms from text file

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide helper tools for doc-freq building and term-freq ratios

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, adapt .gitignore to capture the build-df.sh script

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, also cut off leading non-word chars

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, use actual name of build-df script in calc-tf

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, allow to pipe contents to calc-tf script

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'tool/terms'

* tool/terms:
  minor, allow to pipe contents to calc-tf script
  fix, PEBKAC, use actual name of build-df script in calc-tf
  minor, also cut off leading non-word chars
  chore, adapt .gitignore to capture the build-df.sh script
  minor, provide helper tools for doc-freq building and term-freq ratios
  minor, provide terms(1) tool to extract terms from text file