Updated hw4-contributing/README.md
Updated README.md files in assignments to include test script instructions.
removed the picture in shell-trickes
Removed unnecessary character in sample command and fixed grammar error
Added some new syscalls to check
Server Name Changed
second itteration

added strtok test

Finished tokenize example

Added more tests to tok_string

Added basic example

	modified:   README.md
	new file:   tests/test_project_euler.cpp

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