add sch and src

software/README.md

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+# Software
+
+Software contain 2 parts, one is software of running on Linkt 7697 (an arduino C++ program), another is path generation (a python program).
+
+* hexapod7697: an arduino program running on Linkit 7697
+* pathTool: a python program that generate 3D points header, included by `hexapod7697`
+
+## hexapod7697
+
+Files/Folder | Description |
+------------ | ----------- |
+src/normal_mode | provide normal calibration (forward/backward/turn left/turn right/rotate/etc...) |
+src/setting_mode | provide calirbration functions, to make sure servo is correctly aligned. |
+src/linkit_control/ | UI control helper |
+src/hexapod | hexapod class |
+src/hexapod/hal | Hardware Abatraction Layer to running on Linkit 7697 |
+
+> hexapod7697 use c++11 and STL, you may encounter problem if want to port it on pure Arduino platform.
+
+## pathTool
+
+* Python compatibility:
+    * 3.x: ok.
+    * 2.x: not verified. 
+* Required package
+    * numpy: `pip3 install numpy`
+
+
+