note增加git内容

Day1/note.md

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+# RSOC Day1
+## git
+``` bash
+git init
+git add .
+git commit -m "first commit"
+
+# 给仓库地址设置一个别名(将本地项目与GitHub上的关联)
+git remote add origin https://github.com/*.git 
+# 查看配置的仓库
+git remote -v
+# 删除别名
+git remote remove origin
+
+git push -u origin master
+```
+## SConscript
+加入这个文件可以使在当前文件夹里的也能被调用
+``` SConscript
+from building import *
+import os
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c')
+CPPPATH = [cwd]
+
+if GetDepend(['PKG_USING_RTDUINO']) and not GetDepend(['RTDUINO_NO_SETUP_LOOP']):
+    src += ['arduino_main.cpp']
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+list = os.listdir(cwd)
+for item in list:
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
+        group = group + SConscript(os.path.join(item, 'SConscript'))
+
+Return('group')
+```