Added SPIE-conf-paper.csl for 2014 bibliography

The bibliography format differs considerably from the usual SPIE journals to permit SPIE to automatically generate linked bibliography entries.
update spie-conference-paper.csl
Rename SPIE-conf-paper.csl to spie-conference-paper.csl
Update spie-conference-paper.csl

v3
Update spie-conference-paper.csl

fixed blank item on line 147 by removing the entire associated macro as it was unnecessary. I added, starting on the new line 197, tailored bibliography code for a book-chapter type.
Update spie-conference-paper.csl

deleted line 154, invoking non-existent container-prefix macro
Update and rename spie-conference-paper.csl to spie-proceedings.csl

changed name an internal aliases
Update spie-proceedings.csl

changed internal title to SPIE Conference Proceedings
Merge pull request #812 from wodellUF/patch-1

Added SPIE-conf-paper.csl for 2014 bibliography