Quad spider robot

Just another spider with four lags. Used nano v3 and ada servo controller. Design have place holders for two electronics modules (rc and accelerometer) and four places for SG 90 servos. Columns are for second flour with battery and ultrasonic.
Update: Fixes holes positions;
Update: Added 1 segment for legs. In future updates special small detail for servos is required to provide stability. Main segment tends to have lack of channels for wires for a moment.
Update: Load current release.