Merge pull request #63 from Unity-Technologies/fixes

Fixes for issues #61 & #62

update readme.md

skips PlaybackEngines when probing for Unity root install path

otherwise we may get false positives.

log file name in before " compiling" / converting to make it easier t…

…o diagnose problems.

retrieve the list of referenced assemblies based on Unity version.

Fix #44

log list of defined symbols when in verbose mode (helps identifying p…

…roblems)

Merge pull request #42 from Unity-Technologies/features/exceptionhand…

…ling

Features/exceptionhandling

Merge pull request #39 from Unity-Technologies/target_4_6_1

Target 4 6 1

Merge pull request #39 from Unity-Technologies/target_4_6_1

Target 4 6 1

Merge pull request #31 from Unity-Technologies/issues

Fixing a couple of issues