创建第一个“数据结构和算法”的子项目 ： Stack_Queue

初次提交项目 ===> Data_Structure_and_Algorithm

此项目用来研究 “数据结构和算法” 的 C/C++ 编程实现。
Finished the implementation for function "InitSqStack".
Insert a new macro : OVERFLOW,  to define the error code of memory overflow.
Design some test cases to perform the testing for data structure "Stack".
设计通用测试用例函数， 来调用整个项目的细分测试用例， 验证算法的正确性。
执行通用测试用例。
微调缩进格式
Add a self-description file : README,  to describe current project.
Merge branch 'Study_Stack_Queue'
Declare some functions prototype about the "Stack" data structure.
Merge branch 'Study_Stack_Queue' into develop
Merge branch 'master' into develop
update README.md    Finetune its format and indent.
Update the .gitignore,  to remove the git tracking for some specified types of files.
Use NetBeans IDE to create a new project : String.

To study the "String" data structure and his algorithm.
Merge branch 'develop'.
Merge branch 'master' into develop
Merge branch 'develop' into Study_Stack_Queue
Merge branch 'master' of https://coding.net/xuzan/Data_Structure_and_Algorithm

Conflicts:
	.gitignore