Add bintray deploy in travis build.

.bintray.in

@@ -0,0 +1,43 @@
+{
+    /* Bintray package information.
+       In case the package already exists on Bintray, only the name, repo and subject
+       fields are mandatory. */
+
+    "package": {
+        "name": "releases", // Bintray package name
+        "repo": "tinyobjloader", // Bintray repository name
+        "subject": "syoyo" // Bintray subject (user or organization)
+    },
+
+    /* Package version information.
+       In case the version already exists on Bintray, only the name fields is mandatory. */
+
+    "version": {
+        "name": "@VERSION@",
+        "desc": "@VERSION@",
+        "released": "@DATE@",
+        "vcs_tag": "@VERSION@",
+        "gpgSign": false
+    },
+
+    /* Configure the files you would like to upload to Bintray and their upload path.
+    You can define one or more groups of patterns.
+    Each group contains three patterns:
+
+    includePattern: Pattern in the form of Ruby regular expression, indicating the path of files to be uploaded to Bintray.
+    excludePattern: Optional. Pattern in the form of Ruby regular expression, indicating the path of files to be removed from the list of files specified by the includePattern.
+    uploadPattern: Upload path on Bintray. The path can contain symbols in the form of $1, $2,... that are replaced with capturing groups defined in the include pattern.
+
+    In the example below, the following files are uploaded,
+    1. All gem files located under build/bin/ (including sub directories),
+    except for files under a the do-not-deploy directory.
+    The files will be uploaded to Bintray under the gems folder.
+    2. All files under build/docs. The files will be uploaded to Bintray under the docs folder.
+
+    Note: Regular expressions defined as part of the includePattern property must be wrapped with brackets. */
+
+    "files":
+        [ "tiny_obj_loader.h" ],
+    "publish": true
+}
+