ENH: Ignore internal files for the Clion editor
ENH: Ignore internal files for the Clion editor

The Clion editor works with CMake build system and has editor plugins
for emacs and vim for editing.  This git ignore command allows use of
Clion without needing to ignore the internal project files.

The editor documentation is available here: https://www.jetbrains.com/clion/

Change-Id: Iae2e98e94a806c1c4da336f1933b9c5ee9b7c4b6

blowekamp/ITK,jcfr/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,vfonov/ITK,zachary-williamson/ITK,stnava/ITK,vfonov/ITK,hjmjohnson/ITK,Kitware/ITK,malaterre/ITK,malaterre/ITK,thewtex/ITK,hjmjohnson/ITK,malaterre/ITK,LucasGandel/ITK,spinicist/ITK,thewtex/ITK,jcfr/ITK,richardbeare/ITK,PlutoniumHeart/ITK,fbudin69500/ITK,BRAINSia/ITK,malaterre/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,fbudin69500/ITK,LucasGandel/ITK,spinicist/ITK,zachary-williamson/ITK,BRAINSia/ITK,spinicist/ITK,thewtex/ITK,fbudin69500/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,jcfr/ITK,malaterre/ITK,zachary-williamson/ITK,vfonov/ITK,LucasGandel/ITK,InsightSoftwareConsortium/ITK,spinicist/ITK,blowekamp/ITK,hjmjohnson/ITK,spinicist/ITK,spinicist/ITK,fbudin69500/ITK,stnava/ITK,richardbeare/ITK,LucasGandel/ITK,malaterre/ITK,zachary-williamson/ITK,Kitware/ITK,LucasGandel/ITK,jcfr/ITK,jcfr/ITK,zachary-williamson/ITK,stnava/ITK,thewtex/ITK,blowekamp/ITK,blowekamp/ITK,LucasGandel/ITK,stnava/ITK,blowekamp/ITK,Kitware/ITK,Kitware/ITK,blowekamp/ITK,PlutoniumHeart/ITK,jcfr/ITK,LucasGandel/ITK,blowekamp/ITK,BRAINSia/ITK,blowekamp/ITK,zachary-williamson/ITK,stnava/ITK,richardbeare/ITK,fbudin69500/ITK,jcfr/ITK,PlutoniumHeart/ITK,jcfr/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,PlutoniumHeart/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,vfonov/ITK,malaterre/ITK,PlutoniumHeart/ITK,hjmjohnson/ITK,PlutoniumHeart/ITK,BRAINSia/ITK,thewtex/ITK,stnava/ITK,BRAINSia/ITK,hjmjohnson/ITK,stnava/ITK,spinicist/ITK,richardbeare/ITK,richardbeare/ITK,spinicist/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,hjmjohnson/ITK,vfonov/ITK,PlutoniumHeart/ITK,malaterre/ITK,vfonov/ITK,thewtex/ITK,zachary-williamson/ITK,LucasGandel/ITK,richardbeare/ITK,thewtex/ITK,fbudin69500/ITK,fbudin69500/ITK,vfonov/ITK,hjmjohnson/ITK,stnava/ITK,Kitware/ITK,zachary-williamson/ITK,Kitware/ITK,BRAINSia/ITK,spinicist/ITK,fbudin69500/ITK,stnava/ITK,zachary-williamson/ITK,PlutoniumHeart/ITK