message: refine: gitignore file.
diff: @@ -16,38 +16,38 @@ Parser/Sparql*
  #result logs
  *.txt
  *.log
  +logs
  +
  +#backup files
  +backup.json
  #download files
  *.torrent
  *.iso
  +
  #compressed files
  *.tar.bz2
  *.zip
  *.tar.gz
  -*.tar.bz2
  *.7z
  *.rar
  -#compiled objects
  -*.o
  -*.class
  -#debug logs
  -*.log
  +
  #temp files
  *.dat
  +
  #datasets
  *.nt
  *.n3
  +
  #databases
  *.db
  -#libs
  -*.a
  -*.so
  -*.jar
  +
  #pictures
  *.jpg
  *.jpeg
  *.png
  *.pdf
  +
  #music and movie
  *.mp3
  *.wav
  @@ -59,6 +59,7 @@ Parser/Sparql*
  *.ko
  *.obj
  *.elf
  +*.class
  # Precompiled Headers
  *.gch
  @@ -69,6 +70,7 @@ Parser/Sparql*
  *.a
  *.la
  *.lo
  +*.jar
  # Shared objects (inc. Windows DLLs)
  *.dll
  @@ -85,13 +87,14 @@ cscope*
  .project
  tags
  .settings
  +.vs
  +*.iml
  +.idea
  # latex files
  *.aux
  *.toc
  *.synctex.gz
  -*.log
  -*.out
  *.bak~
  # queries
  @@ -104,6 +107,3 @@ node_modules
  # query results
  *.info
  -/.vs
  -/VSTree/LRUCache2.h
  -/VSTree/LRUCache2.cpp
  