First lexer example

Successfully reads and prints back out sample "hello world" program
To run:
	make
	./main <example.svel
Merge pull request #1 from kaitlinhuben/khuben/testing

First lexer example
Started work on Yacc

Does not successfully parse yet
Merge pull request #2 from kaitlinhuben/khuben/testing

Started work on Yacc
Added basic file/lexer for Emily's syntax proposal

Moved previous work into file "first_attempt"
Added Makefile for easy make/clean
Distinguish test (type) from test() (function)
Added sample output file

This is what the output of running ```./analyzeSvelFile <syntax_example.svel``` should look like.
Merge pull request #3 from kaitlinhuben/khuben/testing

Added basic file/lexer for Emily's syntax proposal
Added HelloWorld example

Can now start building parser/lexer/compiler
Merge pull request #4 from kaitlinhuben/khuben/testing

Added HelloWorld example
Added PLY lexer example

Run with ```python calclex.py```
Merge pull request #5 from kaitlinhuben/khuben/testing

Added PLY lexer example
Added full PLY calculator example

Run with ```python calc.py```
End input loop with CTRL-D
Added PLY example (calculator) that uses classes
Cleaned up PLY examples; added .gitignore
Moved old C lex/yacc examples to own folder
Changed path to ply for ply examples
Preliminary svel lexer

Only recognizes reserved words and IDs/numbers
Can tokenize one line at at time with ```python svelLex.py``` or "test" sample program with ```python testSvelLex.py```
Merge pull request #6 from kaitlinhuben/khuben/testing

Added more full PLY examples
Added /* */ and // style comments