Update hardware/pic32/platforms.txt

Updated revision number for rc4 release.


Former-commit-id: 6affbed5e61e8672f73836f3f5dc00799610172a
Added support for quick240


Former-commit-id: 53ba6117ebbb69bbb96edaea48c48a3be9ce5202
Moved PONTECH boards to bottom of boards file, refactored board defines for PONTECH product and added quicK240 board variant c&h files.


Former-commit-id: 0715e40c896d6358e781542ff700fcbf0c082ced
Fixed PIN_BTN1 value for Fubarino SD.


Former-commit-id: af4e8dcc45c63334cffba5dfcd23cf239e99bad9
Issue #265 updated the .gitignore file.


Former-commit-id: 4dd93fe5fa905a9e24c37d5a79b278bfc12b5742
Applied code fix for SD library conflict with SPI from Gene Apperson, Issue #263


Former-commit-id: 0b775dce86aa9432b51e936323967b5a571fa24c
Updated Fubarino board variants from master.


Former-commit-id: e1a2cdab1a5295c1fa825cc652a776f855dbf392
Update version build number for rc4


Former-commit-id: a9ae883f65baa760f60fea7574ec40986a25e88d