add instructions for requesting help with build failures

Author: rcsanchez97

README.rst

@@ -47,7 +47,7 @@ information:
     - Examples: Windows 10 64-bit x86, Ubuntu 16.04 64-bit x86, macOS 10.13
 - C Compiler and version.
     - Examples: GCC 7.3.0, Visual Studio Community 2017, clang 3.9, XCode 9.3
-- The output of ``cmake``.
+- The output of any ``cmake``, ``make``, or other commands executed during the build.
 - The text of the error you encountered.
 
 Failure to include the relevant information will delay a useful response.

src/libmongoc/doc/installing.rst

@@ -319,6 +319,11 @@ The second way to uninstall is from within the build directory, assuming that it
 
 The second approach simply invokes the uninstall program referenced in the first approach.
 
+Dealing with Build Failures
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If your attempt to build the C driver fails, please see the `README <https://github.com/mongodb/mongo-c-driver#how-to-ask-for-help>` for instructions on requesting assistance.
+
 Additional Options for Integrators
 ----------------------------------