Update index.md
Update index.md
Add a Format method for FSharpAttribute

Fix #219.
WIP
attributes on symbols prototype
Add tests for attributes on symbols
Pretty print IL attributes via Format method
Fix Travis CI build
Another attempt to fix Travis CI build
allow relative paths in project file names
Merge pull request #239 from dungpa/symbol-attributes

Expose attributes for non-F# symbols
merge resolution
Add logging to project cracking facility

Also add more tests, and wrapping of the invalidprojectfileexception so
that only one exception type need be caught (the new API type).

Update documentation to showcase logging