update gitignore

.gitignore

@@ -11,40 +11,39 @@
 # *.sdc
 
 # ignore Quartus II generated folders
-*_sim
+**/*_sim/
-db
+**/db/
-greybox_tmp
+**/greybox_tmp/
-incremental_db
+**/incremental_db/
-simulation
+**/simulation/
-testbench
+**/testbench/
-timing
+**/timing/
 
 # ignore Quartus II generated files
-*_generation_script*
+**/*_generation_script*
-*_inst.vhd
+**/*_inst.vhd
-*.bak
+**/*.bak
-*.cmp
+**/*.cmp
-*.done
+**/*.done
-*.eqn
+**/*.eqn
-*.hex
+**/*.hex
-*.html
+**/*.html
-*.jdi
+**/*.jdi
-*.jpg
+**/*.jpg
-*.mif
+**/*.mif
-*.pin
+**/*.pin
-*.pof
+**/*.pof
-*.ptf.*
+**/*.ptf.*
-*.qar
+**/*.qar
-*.qarlog
+**/*.qarlog
-*.qws
+**/*.qws
-*.rpt
+**/*.rpt
-*.smsg
+**/*.smsg
-*.sof
+**/*.sof
-*.sopc_builder
+**/*.sopc_builder
-*.summary
+**/*.summary
-*.tcl
+**/*.tcl
-*.txt # Explicitly add any text files used
+**/*.txt # Explicitly add any text files used
-*~
+**/*example*
-*example*
+**/*sopc_*
-*sopc_*
+**/PLLJ_PLLSPE_INFO.txt # The generated PLL specification file
-PLLJ_PLLSPE_INFO.txt # The generated PLL specification file