Update README.md

[joserochh]

Support notice

[faberga]

@joserochh Section 7 of the license (See below) already states that HEXL is provided on "AS IS" basis. I will rephrase the README change to emphasize this point,

7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.

[joserochh]

@faberga Should we also rephrase Contributing section of the README to not encourage feedback or suggestion while there is no team to address those at the moment?

[faberga]

@joserochh, probably yes, but let me think about it a little more.