Get tests running/passing under Linux (#194)

* Get tests running/passing under Linux

- Fix up `dlopen` abstraction

- Fix up some test cases to request hlsl (rather than default to dxbc) so they can run on non-Windows targets

- Fix up test runner ignore tests that can't run on current platform (and not count those as failure)

- Fix file handle leeak in process spawner absttraction

- Get additional test-related applications building

- More tweaks to Travis script; in theory deployment is set up now (yeah, right)

* fixup

* fixup: Travis environment variable syntax

* fixup: Buffer->begin

* fixup: actually run full tests on one config

* fixup: add build status badge for Travis

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 2a16273a4..866c89b00 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Slang
 
-[![AppVeyor build status](https://ci.appveyor.com/api/projects/status/3jptgsry13k6wdwp/branch/master?svg=true)](https://ci.appveyor.com/project/shader-slang/slang/branch/master)
+[![AppVeyor build status](https://ci.appveyor.com/api/projects/status/3jptgsry13k6wdwp/branch/master?svg=true)](https://ci.appveyor.com/project/shader-slang/slang/branch/master) [![Travis build status](https://travis-ci.org/shader-slang/slang.svg?branch=master)](https://travis-ci.org/shader-slang/slang)
 
 Slang is a library and a stand-alone compiler for working with real-time shader code.
 It can be used with existing HLSL or GLSL code, but also supports a new HLSL-like shading language, also called Slang.