Fix typo in README.md
Merge pull request #8 from suzukaze/fix-typo

Fix typo in README.md
update README.md for consistent spacing; ref #6
add true/false/nil to the syntax
Use system default compiler instead of unconditionally using gcc. Now works on FreeBSD too
add "How to contribute" to README.md; close #9
Merge pull request #10 from JuEeHa/master

Use system default compiler instead of unconditionally using gcc (FreeBSD compatibility)
use bison -y instead of plain yacc, since streem uses bison extension
place streem excutable to bin directory