Add OPTITRANS input scheme

[vvasuki]

How does one contribute a new input scheme?

Particularly, I'd like opitrans v1 to be added so that :

shankara manju - शङ्कर मञ्जु
shiv shankar (while writing hindI) - शिव शङ्कर
shiv shankar (while writing Samskrita) - शिव् शङ्कर्
ak.ha man.hju - अक्ह मन्जु
mukha - मुख
shraddhAvAn asi. gacCha. - श्रद्धावान् असि। गच्छ।