Updates .travis for branch dependent builds

Again, modifying in the repo in order to get Travis to do its thing.

.travis.yml

 language: cpp
 sudo: false
 
+branches:
+  only:
+    - master
+    - dev
+
 matrix:
   include:
     - os: linux
@@ -47,5 +52,14 @@ after_success:
   - conda install -y -q conda-build anaconda-client 
   # Pull the libcsm for the build from our anaconda channel
   - conda config --add channels usgs-astrogeology
-  - conda config --set anaconda_upload yes
-  - conda build --token $CONDA_UPLOAD_TOKEN recipe -q
+  - conda config --set anaconda_upload no
+  - conda build recipe -q
+  # Get the conda build output dir
+  - builddir=(`conda build recipe --output`)
+  # Label based on the branch and upload to anaconda.org
+  - |
+    if [ "$TRAVIS_BRANCH" == "master" ]; then
+      anaconda -t="$CONDA_UPLOAD_TOKEN" upload $builddir --label main --force;
+    elif [ "$TRAVIS_BRANCH" == "dev" ]; then
+      anaconda -t="$CONDA_UPLOAD_TOKEN" upload $builddir --label dev --force;
+    fi