replace travis w gh action

Author: simonbray

.github/workflows/build.yml

@@ -0,0 +1,38 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: s-weigand/setup-conda@v1
+      with:
+        activate-conda: true
+    - name: Create conda environement
+      run: |
+        source `conda info --base`/etc/profile.d/conda.sh
+        conda create -q -n build-IntaRNA -c conda-forge -c bioconda gcc_linux-64 gxx_linux-64 boost-cpp libboost viennarna>=2.4.14 pkgconfig
+        conda activate build-IntaRNA
+    - name: Script
+      run: |
+        ##### start IntaRNA build #####
+        pwd
+        # generate autotools's files 
+        bash autotools-init.sh 
+        # run configure (without boost checks)
+        ./configure --prefix=$HOME/IntaRNA --with-vrna=`conda info --base`/envs/build-IntaRNA --with-boost=no --without-zlib
+        # compile documentation
+        # - make doxygen-doc
+        # compile, test and install IntaRNA
+        make -j 2 && make tests -j 2 && make install
+        ##### check IntaRNA build #####
+        # run installed IntaRNA with help output
+        $HOME/IntaRNA/bin/IntaRNA -h