X64

[chcg]

• added updated files from https://github.com/npp-plugins/plugintemplate v3.1 and merged them with the ones from this repo
• adaptations for x64
• fixed heap corruption issues with curJSON
• reduced compiler warnings
• updated json with vesion 1.7 from https://sourceforge.net/projects/mjson/files/mjson/mjson-1.7.0.tar.gz/download and merged with the modifications from this repo
• removed unused json_helper.c
• added appveyor.yml, see https://ci.appveyor.com/project/chcg/json-viewer/build/1.0.3
• added gitignore
• see https://notepad-plus-plus.org/community/topic/12646/heads-up-new-plugin-manager-admin-address to register the plugin

[kapilratnani]

Hi,
Thanks for this mega commit. I see you have fixed lots of things. I made this plugin when i was a novice C++ programmer, still i am. I mostly work in Java and Python. Anyway i'll go ahead and merge it.

[chcg]

Biggest part was the merge\takeover of the N++ part. Maybe a little restructuring would make it easier to distinguish between the files just used directly from the template and the ones modified\ created by this project and the other thirdparty ones like the json files. But that is more interesting for outstanding guys like me who wan't to contibute.