Bumped to v0.1.5

Added Travis button/indicator and lowered require to Julia 0.3
prerelease’s
Register GLAbstraction
Register GLWindow
Register GLPlot
Register ModernGL
Merge branch 'metadata-v2' of git://github.com/JuliaLang/METADATA.jl into metadata-v2
Tag GLAbstraction v0.0.1
Tag GLWindow v0.0.1
Tag GLPlot v0.0.1
Tag ModernGL v0.0.1
Tag Cairo v0.2.15
Tag Orchestra v0.0.5
Merge pull request #1142 from svs14/metadata-v2

Tag Orchestra v0.0.5
Tag MolecularDynamics 0.1.2
Tag Codecs v0.1.1
Merge pull request #1144 from timholy/pull-request/c794ca9b

Tag Codecs v0.1.1
Merge pull request #1143 from wesbarnett/metadata-v2

Tag MolecularDynamics 0.1.2
Tag ImageView v0.0.21
Merge pull request #1145 from timholy/pull-request/030b1495

Tag ImageView v0.0.21
Tag Gtk v0.7.2