Add 1st step source code
Merge pull request #1 from yksz/yksz

Add 1st step source code
Delete object files
Add .gitignore
Merge pull request #2 from yksz/gitignore

Gitignore
1st step source files
Update 1st.md
Merge pull request #4 from yksz/master

Update 1st.md
Merge pull request #3 from debuburu/kuroiwa

1st step source files
Add h8write.c in yksz
Merge pull request #5 from yksz/master

Add h8write.c in yksz