[video] add VideoFrame.GetPictureType()

[rtmp] code tidying

[rtmp] bypass a (faulty?) parsing of C1 during handshake

[example] print error cause

Merge pull request #13 from Seize/develop

Release v0.0.5

Merge pull request #11 from Seize/develop

Release v0.0.3

Merge pull request #7 from Seize/fix-build

Fix build

Merge pull request #7 from Seize/fix-build

Fix build

Merge pull request #6 from Seize/develop

Release: v0.0.2

Merge pull request #3 from Seize/develop

Release: v0.0.1