Add instructions how to unset ldflags for builds (#147)

Include a reminder to unset LDFLAGS before running 'make install'

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,10 +1,10 @@
 <!-- < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < ☺
-v                               ✰  Thanks for creating a PR! ✰    
+v                               ✰  Thanks for creating a PR! ✰
 v    Before smashing the submit button please review the checkboxes.
 v    If a checkbox is n/a - please still include it but + a little note why
 ☺ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >  -->
 
-- Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/gaia/blob/develop/CONTRIBUTING.md#pr-targeting))
+- Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/gaia/blob/master/CONTRIBUTING.md#pr-targeting))
 
 - [ ] Linked to github-issue with discussion and accepted design OR link to spec that describes this work.
 - [ ] Wrote tests

docs/installation.md

@@ -31,7 +31,23 @@ git clone -b <latest-release-tag> https://github.com/cosmos/gaia
 cd gaia && make install
 ```
 
-> _NOTE_: If you have issues at this step, please check that you have the latest stable version of GO installed.
+If this command fails due to the following error message, you might have already set `LDFLAGS` prior to running this step.
+
+```
+# github.com/cosmos/gaia/cmd/gaiad
+flag provided but not defined: -L
+usage: link [options] main.o
+...
+make: *** [install] Error 2
+```
+
+Unset this environment variable and try again.
+
+```
+LDFLAGS="" make install
+```
+
+> _NOTE_: If you still have issues at this step, please check that you have the latest stable version of GO installed.
 
 That will install the `gaiad` and `gaiacli` binaries. Verify that everything is OK: