Create MPLABX.gitignore

Added a .gitignore template for Microchip MPLAB X IDE

MPLABX.gitignore

@@ -0,0 +1,11 @@
+## Should be placed at the root (.X folder) of the project
+## Ignore MPLAB X build results, and
+## files generated by popular MPLAB X Compilation
+##
+## Get latest from https://github.com/github/gitignore/blob/master/MPLABX.gitignore
+
+/dist
+/build
+/nbproject/Makefile-*
+/nbproject/Package-*
+/nbproject/private