Added Singleton class to inherit as needed

plugins/git_clone/pexpect/bashrc.sh

@@ -0,0 +1,16 @@
+# Different platforms have different names for the systemwide bashrc
+if [[ -f /etc/bashrc ]]; then
+  source /etc/bashrc
+fi
+if [[ -f /etc/bash.bashrc ]]; then
+  source /etc/bash.bashrc
+fi
+if [[ -f ~/.bashrc ]]; then
+  source ~/.bashrc
+fi
+
+# Reset PS1 so pexpect can find it
+PS1="$"
+
+# Unset PROMPT_COMMAND, so that it can't change PS1 to something unexpected.
+unset PROMPT_COMMAND