uped readme and workflow

.github/workflows/ros_build_test.yml

@@ -8,8 +8,8 @@ on:
     paths-ignore:
       - '**/README.md'
 
-    pull_request:
-      branches: [ master ]
+  pull_request:
+    branches: [ master ]
 
   workflow_dispatch:
 

README.md

@@ -44,3 +44,16 @@ Moreover, the core provides
 | [mrs_uav_status](https://github.com/ctu-mrs/mrs_uav_status)                               |
 | [mrs_uav_trackers](https://github.com/ctu-mrs/mrs_uav_trackers)                           |
 | [mrs_uav_trajectory_generation](https://github.com/ctu-mrs/mrs_uav_trajectory_generation) |
+
+# Disclaimer
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.