adding gzip/replaced bad base64 impl with libgdx's

assets/tvdos/filesystem.md

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+# Syntax
+## Reserved directories
+* `$DEVICE<device_number>`
+
+## Reserved files
+* `$DEVICE<device_number>/$BOOT` — associates to bootloader, exact filename depends on the filesystem the device uses
+
+# Drivers
+Filesystem driver is just an executable that can do file I/O to one specific filesystem it supports.
+
+Filesystem drivers, just as regular TVDOS drivers, resides in `<root>/TVDOS/DRIVERS/`
+
+# Commands
+
+## cp
+`[cp|copy] <source> <destination>`
+
+Executes following command:
+```
+<filesystem>.fs cp <source> <dest>
+```
+
+## mv
+`[mv|move] <from> <to>`
+
+Executes following command:
+```
+<filesystem>.fs mv <from> <to>
+```
+
+## touch
+`touch <path>`
+
+Executes following command:
+```
+<filesystem>.fs touch <path>
+```
+
+## format
+`format -f [tsvm|flat|tree] [ -b <path_to_bootloader> ] <device_number>`
+
+Executes following command:
+```
+<filesystem>.fs format <device_number> [ <path_to_bootloader> ]
+```