change the platform information.

Author: LynnL4

platform.txt

@@ -19,8 +19,8 @@
 # For more info:
 # https://github.com/arduino/Arduino/wiki/Arduino-IDE-1.5---3rd-party-Hardware-specification
 
-name=Adafruit SAMD (32-bits ARM Cortex-M0+ and Cortex-M4) Boards
-version=1.5.3
+name=Seeed SAMD (32-bits ARM Cortex-M0+ and Cortex-M4) Boards
+version=1.5.4
 
 # Compile variables
 # -----------------