The 'Bro Hogan' library however does work. A modification to make it work with Attiny85 can be found here.

The 'NewLCD' library from Francisco Malpartida is my favorite library, but also that one fails in using I2C for the Attiny because it makes a call to the Wire library. It needs the TinyWireM library to act as an I2C master Library The standard Arduino library cannot be used for I2C on the Attiny because it does a call to 'Wire.h' and that one is not compatible with the Attiny. The 'Wire' library that is used to read and write bytes from and to the I2C port on the arduino doesnt work on the attiny. I2C The attiny85 can simulate I2C on PB2 (pin 7) (SCL) and PB0 (pin 5) (SDA). That circuit made use of an HC164 shift register, but as I2C modules for LCD's are extremely cheap and even LCD's with a module already in place also are dirt cheap, one might as well use I2C on the Attiny85. With the attiny only having a max of 6 pins available, it goes without saying that it cannot directly control all the pins of the standard Hitachi based LCD's A little bit over a year ago, I described how to add an LCD to an Attiny or other chip, using only 2 pins.

Using an LCD on a small chip like an attiny85 is not really that hard and till recent I didnt even think it warranted an instructable, but I have received questions about it, so I may as well expand on the process. Put all those files (except the picture) in ONE directory, where also your INO file goes In this link you will find the configuration that works for me on IDE 1.6.9. Usually that is because of not having the right library, not having that library installed properly or have it overwritten by an update.

Wire library for attiny85