Add .gitignore file.
Add .gitignore file.

trinityrnaseq/trinityrnaseq,trinityrnaseq/trinityrnaseq,trinityrnaseq/trinityrnaseq,trinityrnaseq/trinityrnaseq,trinityrnaseq/trinityrnaseq,trinityrnaseq/trinityrnaseq,trinityrnaseq/trinityrnaseq