Support sending multiline code to REPL
Fix sending string to REPL after first evaluation

coffee-mode has to send 'C-vC-v' for switching multiline mode
at first time, but it has to send 'C-v' after first time evaluation.
Merge pull request #256 from defunkt/support-multiline-send

Support sending multiline code to REPL
Fix case that first evaluation is not multiple lines

'C-vC-v' is necessary only first time evaluation
regardless of one line or multiple lines.
Merge pull request #257 from defunkt/improve-interactive-repl

Fix case that first evaluation is not multiple lines
Add caution about installing ELPA package
Improve English