pip install mkdocs-material specifictly

Author: vinta

Makefile

@@ -2,7 +2,8 @@ BASEDIR=$(CURDIR)
 DOCDIR=$(BASEDIR)/docs
 
 install:
-	pip install mkdocs mkdocs-material mkdocs-bootswatch
+	pip install mkdocs==0.16.3
+	pip install mkdocs-material==1.12.2
 
 link:
 	ln -sf $(BASEDIR)/README.md $(DOCDIR)/index.md